Please explain how to reason through the problem while answering the question.

QUESTION 20 Consider the following game, where Player 1 chooses action A1=A, B, C, or D, and Player 2 choose action A2= A or B. What are the equilibria in this game (select all that apply). Player 2 A B A 2,1 1,2 B 2,1 2,2 Player 1 C 1,1 1,2 D 2,2 2,1 O (A1,A2)=(A,A) O (A1,A2)=(A,B) O (A1,A2)=(B,A) O (A1,A2)=(B,B) O (A1,A2)=(C,A) O (A1,A2)=(C,B) O (A1,A2)=(D,A) O (A1,A2)=(D,B) O There are no equilibria