An ionized dust particle of mass $m\,$ and charge $+ q$ is falling through a viscous fluid between two vertically oriented, oppositely charged parallel plates. A horizontal magnetic field is also applied perpendicular to the plates.

The forces acting on the dust particle are defined as:

Weight ( $FgravityF_{\text{gravity}}$ )
Viscous drag ( $FdragF_{\text{drag}}$ )
Upthrust ( $FbuoyancyF_{\text{buoyancy}}$ )
Electrostatic force ( $FelectricF_{\text{electric}}$ )
Magnetic force ( $FmagneticF_{\text{magnetic}}$ )

Which of the following options correctly classifies all these forces into contact and non-contact forces?

Contact: $FdragF_{\text{drag}}$ and $FbuoyancyF_{\text{buoyancy}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ , $FelectricF_{\text{electric}}$ , and $FmagneticF_{\text{magnetic}}$

Contact: $FgravityF_{\text{gravity}}$ and $FdragF_{\text{drag}}$ ; Non-contact: $FbuoyancyF_{\text{buoyancy}}$ , $FelectricF_{\text{electric}}$ , and $FmagneticF_{\text{magnetic}}$

Contact: $FdragF_{\text{drag}}$ , $FbuoyancyF_{\text{buoyancy}}$ , and $FmagneticF_{\text{magnetic}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ and $FelectricF_{\text{electric}}$

Contact: $FdragF_{\text{drag}}$ and $FelectricF_{\text{electric}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ , $FbuoyancyF_{\text{buoyancy}}$ , and $FmagneticF_{\text{magnetic}}$

The forces acting on the dust particle are defined as:

Weight ( $FgravityF_{\text{gravity}}$ )
Viscous drag ( $FdragF_{\text{drag}}$ )
Upthrust ( $FbuoyancyF_{\text{buoyancy}}$ )
Electrostatic force ( $FelectricF_{\text{electric}}$ )
Magnetic force ( $FmagneticF_{\text{magnetic}}$ )

Which of the following options correctly classifies all these forces into contact and non-contact forces?

Contact: $FdragF_{\text{drag}}$ and $FbuoyancyF_{\text{buoyancy}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ , $FelectricF_{\text{electric}}$ , and $FmagneticF_{\text{magnetic}}$

Contact: $FgravityF_{\text{gravity}}$ and $FdragF_{\text{drag}}$ ; Non-contact: $FbuoyancyF_{\text{buoyancy}}$ , $FelectricF_{\text{electric}}$ , and $FmagneticF_{\text{magnetic}}$

Contact: $FdragF_{\text{drag}}$ , $FbuoyancyF_{\text{buoyancy}}$ , and $FmagneticF_{\text{magnetic}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ and $FelectricF_{\text{electric}}$

Contact: $FdragF_{\text{drag}}$ and $FelectricF_{\text{electric}}$ ; Non-contact: $FgravityF_{\text{gravity}}$ , $FbuoyancyF_{\text{buoyancy}}$ , and $FmagneticF_{\text{magnetic}}$

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