The table shows the boiling point range of three fuels. Fuels with a higher boiling point range contain larger molecules. What is the order of the three fuels, from the least flammable to the most flammable?
Table: The boiling point range of three fuels obtained from crude oil
| Fuel | Boiling point range in ∘C^\circ\text{C}∘C |
|---|---|
| P | 25 to 70 |
| Q | 175 to 250 |
| R | 300 to 400 |
P, Q, R
R, Q, P
Q, R, P
R, P, Q