Which of the following differential equations can be solved by utilizing the method of undetermined coefficients? I: " - ty + 3y = e* II : yw) – y = cost – sin t et – cost III : 2y" + 2y – 6y = IV :...

Extracted text: Which of the following differential equations can be solved by utilizing the method of undetermined coefficients? I: " - ty + 3y = e* II : yw) – y = cost – sin t et – cost III : 2y" + 2y – 6y = IV : y" + 3y – 2y = tant +t A) only II B) I and III C) I and II D) II and IV E)III and IV