Suppose Two People Experience the Same Stressful Events, and as a Result

Suppose two people experience the same stressful events, and as a result of the experience, one person develops an affective disorder while the second person shows no ill effects. The diathesis-stress model would most likely explain this by saying that the

A) person who developed the disorder was older than the other person.
B) disordered person must be female and the other person must be male.
C) two people had different predispositions for the disorder and had likely experienced different levels of stress during past encounters with similar stimuli.
D) person who developed the disorder had a gene that guaranteed the disorder would develop at some point (even without any stress) .