Samara wants to incorporate feedback into the design of a new game she is working on, but she doesn’t want to do this by simply displaying a score on the top of the screen—she is hoping to do something a bit more creative. What would be another way that Samara could incorporate feedback into her game design creatively? sending the user an email about their progress

having the user’s character change color or shape

allowing the user to communicate with other players

having a pop-up bubble appear where the user can type a question

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.