If in the game matrix, there exists an element which is smallest in its row and greatest in its column then this row-column pair is an equilibrium pair. For each row write the lowest element to the right, and for each column write the greatest element below the matrix:

Now, observe that max {-7, -4, -2, -1} = -1 and min {-1, 0, 2} = -1. Therefore, (1st row, 2nd column) is an equilibrium pair. The correct answer is A.