The expression f(g(x)) is equivalent to:fg(x)f(x) g(x)fog (x)all of these choices are correctnone of these choice are correctI don’t think my answer is correct please help me

The given expression f(g(x))
Means the function of the function
So, we need to substitute with g(x) into the function f(x) instead of x
So, the answer will be option 3) fog (x)