Question 1: write a program that keeps a dictionary in which both keys and values are strings, names of students and their courses grades. Prompt the user of the program to add or remove students, to...

Question 1: write a program that keeps a dictionary in which both keys and values are strings, names of students and their courses grades. Prompt the user of the program to add or remove students, to modify grades, or to print all grades. The printout should be sorted by name and formatted like this:Carl: B+Joe: CSarah: AFrancine: A