Mario's Pizza and Bella's Pizza Are in Tacit Collusion to Cooperate

Multiple Choice

Mario's Pizza and Bella's Pizza are in tacit collusion to cooperate and each charge a high price for their pizzas. If Mario's Pizza initially cooperates with Bella's Pizza, but then switches and charges a low price and Bella's Pizza responds by forever charging a low price, this is an example of ________.

A) a tit- for- tat strategy
B) a trigger strategy
C) an end- period problem
D) a one- shot game