Which of the following differential equations can be solved by utilizing the method of undetermined coefficients? I: y"-ty +3y = e' II: y")-y = cost-sin t et III: 2"+2y' – 6y: Cos t IV : y"+3y 2y...

Extracted text: Which of the following differential equations can be solved by utilizing the method of undetermined coefficients? I: y"-ty +3y = e' II: y")-y = cost-sin t et III: 2"+2y' – 6y: Cos t 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