If 2/a + 3/a + 7/a is an integer, which of the following must also be an integer? Choose the correct choice from the following:
A) 12/a B) 3/a C) 6/a D) 9/a E) 15/a
2/a + 3/a + 7/a   =12/a   12/answer 12/a
<result>A</result>
If 2/a + 3/a + 7/a is an integer, which of the following must also be an integer?