If 60/x is an integer and 6/x is an integer, which of the following must be true?

If 60/x is an integer and 6/x is an integer, which of the following must be true? I. 6/x is an integer II. 12/x is an integer III. 15/x is an integer

Quiz

Answer/Solution

I only

Steps/Work

The question asks which of the following MUST be true, not COULD be true. The largest possible value of x is 6, GCD of 60 and 6, and if x=6 then ONLY I is true.
Answer: B