Design a class named LunchBox. The class should have the member variables width, size, color, and fo

Design a class named LunchBox. The class should have the member variables width, size, color, and food.Declare all member variables as private. Add a default constructor and a constructor that expects values for all member variables as parameters and assigns each value to the corresponding member variable.Also, add a getter functionfor each member variable. Add a setter function for the food member variable only.Declare all constructors and functions as public.