Match the solutions to the differential equations. If multiple options could be correct for one of the differential equations, pick the option that includes all solutions.

 1. $x^2 y'' + 4 x y' - 18 y = 0$
 2. $x^2 y'' - 42 y = 0$
 3. $y'' - 25 y = 0$

A. $y = x^{4}$ or $y = x^{-3}$
B. $y = e^{4 x}$
C. $y = x^{-6}$ or $y = x^{7}$
D. $y = x^{-1}$
E. $y = x^{-6}$
F. $y = e^{5 x}$ or $y = e^{-5 x}$