Which of the Following Is True Regarding Contingency Variables

Which of the following is true regarding contingency variables?

A) They refer to situational factors that moderate the relationship between two or more variables.
B) They make simple, accurate, and sweeping generalizations about concepts in organizational behavior.
C) They indicate that everyone is motivated by money and financial perks.
D) They refer to scientific factors which are based on universal truths.
E) They remain constant irrespective of any change in the environment.