1.Add a method called weightedGrade(int iIn) to the Student class. This method will take an number of type 'int' and return a decimal number of type 'float': 2.Obtain the gpa from a call to the method that calculates the gpa and set the result to a variable declared within this method to hold the gpa. public float weightedGrade(int iIn) { ---NOOOOOOOOOOOOOOOprivateNOOOOOOOOOOOOOOO--- float weightedGPA; weightedGPA = GPACalc() + iIn; return weightedGPA; }