Which set of the following quantum numbers represent an electron in the p subshell? Select one: O a. n = 1, 1 = 0, ms = 0, ms = +1/2 O b. n = 3,1 = 2, ms = -1, ms = -1/2 O c. n = 2,1 = 1, ms = 0, ms = +1/2 O d. n = 4,1 = 2, ms = -2, ms = +1/2