Alex was willing to pay $50 for the new World Cup soccer ball. When he received it as a gift, he was willing to sell it, but for no less than $80. According to behavioral economists:
A. Alex's behavior is consistent with the endowment effect.
B. Alex's behavior is irrational because of inconsistent anchoring.
C. Alex should sell the ball if he's offered any amount over $50.
D. Alex's behavior is irrational because his frame has changed.
