How many times a solution of pH $=2$ is more acidic than a solution of pH $=6$?

The correct option is A 10,000
If $pH=2$, then $\left[H^{+}\right]={10}^{-2}M$
If $pH=6$ then $\left[H^{+}\right]={10}^{-6}M$
$M=\frac{{10}^{-2}}{10000}⟹M=\frac{\left[H^{+}\right]}{10000}$
So, a solution of pH $=2$ is more acidic by 10,000 than a solution of pH $=6.$