Set $M = \{ 2,4,6,8,10 \} , N = \{ x \mid - 1 < x < 6 \}$ , then $M \cap N =$ A. $\{ 2,4 \}$ B. $\{ 2,4,6 \}$ C. $\{ 2,4,6,8 \}$ D. $\{ 2,4,6,8,10 \}$