If a positive integer n is divisible by both 2 and 7, then n must also be divisible by which of the following?
I. 14
II. 9
III. 42	Choose the most appropriate option:
A) None
B) I only
C) II only
D) I and II
E) II and III
A multiple of 2 and 7 is also a multiple of 14, but not necessarily a multiple of 9 or 42.   The answer is I only.
<result>B</result>
If a positive integer n is divisible by both 2 and 7, then n must also be divisible by which of the following?
I. 14
II. 9
III. 42