Need help:(.... Simplify (b^5)^2

For this case we must indicate an expression equivalent to:
[tex](b ^ 5) ^ 2[/tex]
We have that by definition of properties of powers that is fulfilled:
[tex](a ^ n) ^ m = a ^ {n * m}[/tex]
Now, we can rewrite the given expression as:
[tex](b ^ 5) ^ 2 = b ^ {5 * 2} = b ^ {10}[/tex]
ANswer:
[tex]b^{10}[/tex]
Option A