There are how many integral solution pairs are possible for

(3x^2 + y^2 - 4y - 17)^3 - (2x^2 + 2y^2 - 4y - 6)^3 = (x^2 - y^2 - 11)^3

a. 6
b. 8
c.10
d.12
e. None of These