Let the area enclosed between the curves $$|y|= 1-x^{2}$$ and $$x^{2}+y^{2}=1$$ be $$\alpha$$. If $$9\alpha$$ = $$\beta \pi + \gamma; \beta,\gamma$$ are integers, then the value of $$|\beta - \gamma |$$ equals.

A

27

B

33

C

15

D

18