Decide whether the method of undetermined coefficients together with superposition can be applied to find a particular solution of the given equation. Do not solve the equation. y"-y'+y=(3et+21) Can the method of undetermined coefficients together with superposition be applied to find a particular solution of the given equation? A. No, because the differential equation does not have constant coefficients B. No, because the right side of the given equation is not the correct type of function. C. No, because the differential equation is not linear OD. Yes 000