I need help creating a program using C# .Net Console platform.

I've implemented the classes for this program which are: Student (name, DOB, ID, Major, GPA), Grad Student (Degree, university, major, gpa), <> Classification (Freshman, Sophmore, Junior, Senior), Undergrad Student (High School, Classification) 1. I'm now supposed to declare 2 lists of the derived classes type named gradList and undergradList. - When I try to do this my program throws a lot of errors, how do I properly do this.

2. Add functions to do the following: Add grad student (to gradList), Add undergrad student (to undergradList), display all grad students, and display all undergrad students

The add lists should be able to take user input to store and show in the display lists.

gradList needs to have: Name, ID, DOB, Major, GPA, Prev Degree, Undergrad Major, undergrad GPA

undergradList needs to have: name, ID, DOB, major, gpa, prev highschool, classification