Use Variation of Parameters to Find the General Solution of the Nonhomogeneous

Multiple Choice

Use variation of parameters to find the general solution of the nonhomogeneous differential equation

A) $y(t) =C_{1} \cos (7 t) +C_{1} \sin (7 t) +7 \sin (7 t) \ln |\cos (7 t) |+7 t \cos (7 t)$
B) $y(t) =C_{1} \cos (7 t) +C_{1} \sin (7 t) +\sin (7 t) \ln |\cos (7 t) |+t \cos (7 t)$
C) $y(t) =C_{1} \cos (7 t) +C_{1} \sin (7 t) +\frac{1}{49} \cos (7 t) \ln |\cos (7 t) |+\frac{1}{7} t \sin (7 t)$
D) $y(t) =C_{1} \cos (7 t) +C_{1} \sin (7 t) -\frac{1}{7} \cos (7 t) \ln |\cos (7 t) |+7 t \sin (7 t)$