If ab = 3(a + 1) + b and a and b are integers, a could be any of the following values EXCEPT:  Select:	A) 2	B) 3	C) 6	D) 4	E) 7
ab = 3(a + 1) + b   ab - b = 3(a + 1)   b = 3(a + 1)/(a-1)   b won't be an integer only if a = 6 (from the options).   Answer: 6
<result>C</result>
If ab = 3(a + 1) + b and a and b are integers, a could be any of the following values EXCEPT: