If Mx(t) = pet / (1 - qet), where p ∈ (0, 1) and q = 1 - p, is the moment generating function of a random variable X, then which of the following is true?
A. E(X) = 1/q and E(X^2) = (2-p)/q^2
B. E(X) = 1/p and E(X^2) = q/p^2
C. E(X) = 1/p, and E(X^2) = (2-p)/p^2
D. E(X) = 1/q and E(X^2) = q/(2-p)
E. E(X) = 1/p^2 and E(X^2) = (q/p)^2
