Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Each of the numbers except 28, is a multiple of 3.
 The question and answer:
user
Select Odd number:
6, 9, 15, 21, 24, 28, 30
Options:
(A) 20
(B) 21
(C) 24
(D) 28
(E) 30
The answer is (D)
assistant