Use the following code and answer the below two questions. //student is a record contains data about the student's grades that can be used to calculate the GPA of the students float GPA_Simulator(student st, int student Type) { switch(studentType) { case 1: GPA= postgraduate_module(st); // postgraduate_module for calculating the GPA of postgraduate students break; case 2: GPA=undergrade module (st); break; default: cout