If P= $ \begin{bmatrix}1 & α & 3 \\1 & 3 & 3 \\2 & 4 & 4\end{bmatrix}$ is the adjoint of a 3 x 3 matrix A and |A| = 4, then α is equal to
a | X | Y | Z |
M | 3, 1 | 0, 0 | −1, 2 |
N | 0, 0 | 1, 3 | 0.5, 1 |
Which set of strategy profiles survives iterated elimination of strictly dominated strategies?