设集合 $M=\{x \mid 0 \leqslant x < 2\}$, 集合 $A=\left\{x \mid x^2-2 x-3 < 0\right\}$, 集合 $M \cap N=$
$\text{A.}$ $\{x \mid 0 \leq x < 1\}$
$\text{B.}$ $\{x \mid 0 \leq x < 2\}$
$\text{C.}$ $\{x \mid 0 \leq x \leq 1\}$
$\text{D.}$ $\{x \mid 0 \leq x \leq 2\}$