25. The equation of the common tangents to the curves $y ^ { 2 } = 8 x$ and $x y = - 1$ is (A) $\quad 3 y = 9 x + 2$ (B) $\quad y = 2 x + 1$ (C) $\quad 2 y = x + 8$ (D) $\quad y = x + 2$
25. The equation of the common tangents to the curves $y ^ { 2 } = 8 x$ and $x y = - 1$ is\\
(A) $\quad 3 y = 9 x + 2$\\
(B) $\quad y = 2 x + 1$\\
(C) $\quad 2 y = x + 8$\\
(D) $\quad y = x + 2$\\