Apply custom cell borders with a Green, Accent 6, Darker 50% (10th column, 6th row in the Theme Colors palette) line color as described below: a. Add an Outline border with a Medium border style (2nd column, 5th row) to the range G3:K21. b. Add a Vertical Line border with a Light border style (1st column, 7th row) to the range G3:K21. c. Add a Top border with a Light border style (1st column, 7th row) to the range G4:K4. d. Add a Bottom border with a Light border style (1st column, 7th row) to the range G18:K18.

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given. b)the definition of max_cost should be removed since header files should not contain constants. c)the definition of book should be removed since header files should not contain class definitions. d)the body of the calculate_terms function should be added to the header file.