The $pH$ of $0.01\;M$ solution of acetic acid is $5.0$. What are the values of $[H^{+}]$ and $K_{\alpha}$ respectively ?

Question

$$\begin {array} {1 1} (1)\;1 \times 10^{-5}M,1 \times 10^{-8} & \quad (2)\;1 \times 10^{-5}M,1 \times 10^{-9} \\ (3)\;1 \times 10^{-4}M,1 \times 10^{-8} & \quad (4)\;1 \times 10^{-3}M,1 \times 10^{-8} \end {array}$$