Use the method of variation of parameters to solve the differential equation.36D2y - y = sin x
A. y = C1ex/6 + C2e-x/6 - 
sin x
B. y = C1ex/6 + C2e-x/6 - 
sin x + 
cos x
C. y = C1ex/6 + C2e-x/6 + 
sin x
D. y = C1ex/6 + C2e-x/6 - 
cos x
Answer: A
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