15. Let $a$ and $\beta$ be the roots of $x 2 - x + p = 0$ and $y$ and $\delta$ be the roots of $x 2 - 4 x + q = 0$.\\
if $\mathrm { a } , \beta , \mathrm { Y } , \delta$ are in G.P. then the integral values of P and q respectively, are:\\
(A) $- 2 , - 32$\\
(B) $- 2,3$\\
(C) $- 6,3$\\
(D) $- 6 , - 32$\\