Which of the Following Examples Best Demonstrates How Situational Factors

Which of the following examples best demonstrates how situational factors can affect cooperation, as discussed in the textbook?

A) Jodi expects to compete with people playing the prisoner's dilemma game; because she is the most competitive, she is likely to win the game.
B) Steve expects to compete with people playing the prisoner's dilemma game but becomes more cooperative in the game if his partner is cooperative.
C) Mary thinks the prisoner's dilemma game is competitive but assumes everyone else thinks the game is cooperative.
D) Brian expects to compete with people playing the prisoner's dilemma game, and his competitiveness makes his partners more competitive.