DESCRIP TION Write a class named InventoryItem that can hold information for an item in a retail store's inventory. The class should have the following private data members: number: An integer that holds the item's number. name: A string that describes the item. quantity: An integer that holds the quantity of the item on hand. cost: A double that holds the wholesale per-unit cost of the item. . The class should have the following public members: constructor 1The default constructor which sets all numeric data members to 0 and name to empty string. Use an initializer list for this. constructor #2 : Accepts an item's number and name as arguments and sets the remaining quantity, and cost to O. Use an initializer list for this. constructor #3 : Accepts an item's number, name, quantity, and cost as arguments. Use an initializer list for this. destructor: An empty destructor. . . accessors: Write a getter function (accessor) for each data member. Use const with these functions and, if the return type is non-primitive, return a const reference to the data member. mutators: Write a setter function (mutator) for each data member. Accepts a single argument. getTotalCost: A const function that computes and returns the total cost of all the units on hand. The total cost is calculated by multiplying quantity by cost