Question: 1) Modify class GradeBook as follows: a) Include a second string data member that represents the course instructor's name. b) Provide a set function

1) Modify class GradeBook as follows: a) Include a second string data member that represents the course instructors name. b)

1) Modify class GradeBook as follows: a) Include a second string data member that represents the course instructor's name. b) Provide a set function to change the instructor's name and a get function to retrieve it. c) Modify the constructor to specify course name and instructor name parameters. d) Modify function display Message to output the welcome message and course name, then the string "This course is presented by: " followed by the instructor's name. Use your modified class in a test program that demonstrates the class's new capabilities.

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