While Boarding a Plane, Doug Feels Fear When He Notices

While boarding a plane, Doug feels fear when he notices another passenger sitting in his seat looking agitated and sweating profusely.In this situation,

A) his emotional reaction is probably controlled by careful, systematic thought.
B) his emotional reaction probably occurs before careful, systematic thought takes over.
C) careful, systematic thought is probably controlled by his emotional reaction.
D) careful, systematic thought probably occurs before his emotional reaction takes over.