How Can Multiple Equilibria Be Identified, Using the Check Mark

Multiple Choice

How can multiple equilibria be identified, using the check mark method on a payoff table?

A) More than one cell has two checks, and those cells represent equilibria.
B) There is a check in more than one cell, each check indicating an equilibrium.
C) Multiple cells have no checks, and those cells are the equilibria.
D) A check is put in a cell if both players have agreed to take that action.