The diagram shows the antagonistic muscles in the human iris, labelled X X\,X and YYY.
A person moves from a brightly lit environment into a dark room. Which row in the table correctly identifies the autonomic pathway activated and the states of muscles X X\,X and Y Y\,Y during pupillary dilation?
Autonomic divisionMuscle XMuscle YParasympatheticContractedRelaxed
\begin{array}{c|c|c} \text{Autonomic division} & \text{Muscle } X & \text{Muscle } Y \\ \hline \text{Parasympathetic} & \text{Contracted} & \text{Relaxed} \end{array}
Autonomic divisionParasympatheticMuscle XContractedMuscle YRelaxed
Autonomic divisionMuscle XMuscle YSympatheticContractedRelaxed
\begin{array}{c|c|c} \text{Autonomic division} & \text{Muscle } X & \text{Muscle } Y \\ \hline \text{Sympathetic} & \text{Contracted} & \text{Relaxed} \end{array}
Autonomic divisionSympatheticMuscle XContractedMuscle YRelaxed
Autonomic divisionMuscle XMuscle YSympatheticRelaxedContracted
\begin{array}{c|c|c} \text{Autonomic division} & \text{Muscle } X & \text{Muscle } Y \\ \hline \text{Sympathetic} & \text{Relaxed} & \text{Contracted} \end{array}
Autonomic divisionSympatheticMuscle XRelaxedMuscle YContracted
Autonomic divisionMuscle XMuscle YParasympatheticRelaxedContracted
\begin{array}{c|c|c} \text{Autonomic division} & \text{Muscle } X & \text{Muscle } Y \\ \hline \text{Parasympathetic} & \text{Relaxed} & \text{Contracted} \end{array}
Autonomic divisionParasympatheticMuscle XRelaxedMuscle YContracted