Which of the following is a valid set of four quantum numbers? (n, l, ml, ms) A. n = 2, l = 1, ml = 0, ms = +1/2 B. n = 2, l = 2, ml = +1, ms = -1/2 C. n = 1, l = 0, ml = +1, ms = +1/2 D. n = 1, l = 1, ml = 0, ms = -1/2 E. n = 2, l = 1, ml = +2, ms = +1/2