If i have a random sample of size n from a uniform(0,1) and i define the geometric mean as g can anyone give me insight in to how i can find the expected value of g, e[g]?

A) E[g] = 1/(2n)
B) E[g] = 1/(2^(2n))
C) E[g] = 1/√n
D) E[g] = 1/2^n