Let A and B be two non-null events such that `A sub B`. Then, which of the following statements is always correct?

Options

A. a) P(A | B) = P(B) - P(A)
B. b) `P(A | B) ge P(A)`
C. c) `P(A | B) le P(A)`
D. d) P(A | B) = 1