USING R coding

Do 5-fold cross-validation for the previous polynomial models of degree d. Create a plot of the rMSE on the training data and rMSE on the test data for each of the polynomial models. What do you conclude? Draw a picture showing your results. Do 5-fold cross-validation for the previous polynomial models of degree d. Create a plot of the rMSE on the training data and rMSE on the test data for each of the polynomial models. What do you conclude? Draw a picture showing your results