If x is a rational number and (x + 1)3 - (x - 1)3 = 2 , then the sum of numerator and denominator of x is (x + 1)2 - (x - 1)2

If x is a rational number and (x + 1)3 - (x - 1)3 = 2 , then the sum o

1.	If x is a rational number and (x + 1)3 - (x - 1)3 = 2 , then the sum of numerator and denominator of x is (x + 1)2 - (x - 1)2
A.	3
B.	4
C.	5
D.	7
Answer» C. 5