What two numbers are missing from this factor tree for the prime factorization of 252?

A. 2 and 21
B. 2 and 42
C. 3 and 21
D. 3 and 42

What two numbers are missing from this factor tree for the prime factorization of 252 A 2 and 21 B 2 and 42 C 3 and 21 D 3 and 42 class=