Months The file SomeMonths. txt initially contains the names of the 12 months. Write a program that deletes all months from the file that do not contain the letter r. The program should use a global variable months that is initialized as the empty list. The function main should call three functions: fillList to fill the list months with the contents of the text file deleteNoRs: one to delete from the list months the months that do not contain the letter r display Months: to display the names of the months remaining in the list.