For Which of These Differential Equations Is the Characteristic Equation $y^{\prime \prime}+50=0$

Multiple Choice

For which of these differential equations is the characteristic equation given by

A) $y^{\prime \prime}+50=0$
B) $y^{\prime \prime}+50 y=0$
C) $y^{\prime \prime}-2 y^{\prime}+50=0$
D) $y^{\prime \prime}-2 y^{\prime}+50 y=0$
E) $\left(y^{\prime}-(1-7 i) \right) \left(y^{\prime}-(1+7 i) \right) =0$
F) $\left(y^{\prime}-(1-7 i) y\right) \left(y^{\prime}-(1+7 i) y\right) =0$