If m/21 is an integer, then each of the following must be an integer EXCEPT  Choose the most appropriate option.
A) 5/2  B) 4  C) 3  D) 2  E) 1
Now plug m =21 into the answer choices:   A. (21- 28)/7 = -1. This is an integer   B. (21+ 21)/7 = 6. This is an integer   C. 14(21)/98 = 3. This is an integer   D. (21^2 - 49)/49 = 8. This is an integer   E. (21+ 14)/14 = 5/2. This is NOT an integer   5/2nswer: 5/2
<result>A</result>
If m/21 is an integer, then each of the following must be an integer EXCEPT