You are given two classes, Person and Student, where Person is the base class and Student is the derived class. Completed code for Person and a declaration for Student are provided for you in the editor. Observe that Student inherits all the properties of Person.

Complete the Student class by writing the following:

A Student class constructor, which has 4 parameters:

A string, firstName

A string, lastName

An integer, id An integer array (or vector) of test scores, scores

A char calculate() method that calculates a Student object's average and returns the grade character representative of their calculated average:

A | 90-100 B | 80-89 C | 70-79 D | 60-69 F | <60