If 4c + 4/c + 6/c + 6c is an integer, which of the following must also be an integer?	Choose the correct choice from the following choices.
A) 10/c B) 10+c/c^2 C) 10(c^2 + 1)/c D) c+15/c^2 E) c^2 -3/c
If 4c+6/c+4/c+6c is also integer.   i.e. 10(c^2 +1)/c is an integer.   Answer is 10(c^2 + 1)/c
<result>C</result>
If 4c + 4/c + 6/c + 6c is an integer, which of the following must also be an integer?