[单选题]
The probability of find987 cf;4ppl ygqai/oe ing an electroe06/7 yod.3 z7tzjr exe2ob2zuies 2in in a hydrogen atom is directly proportionalzoezuy7b3j szi6 2xo.2/ t erei2e0d7 to its
A. energy.
B. momentum.
C. wave function.
D. square of the wave function.
