For this assignment you need to perform the following tasks. 1. Create a class named RetirementAccount. The class should have a class constructor that takes the 4 variables, D, m, r, t as parameters. 2. Create a default class constructor as well. This constructor can set all of the private member variable values to 1.0. 3. You must have getter and setter methods for all 4 of the member variables of the class. The methods will be named set_D(), set_m(), set_r(), set_t() and get_D(), get_m(), get_r(), get_t(), respectively. 4. Create a member function named tostring(). This function will not take any parameters as input. It returns a string that represents the 2 values/settings of the RetirementAccount class. See the example output below for the format of the string to be returned. 5. Create a member function named calculateRetirementSavings(). This function should implement the rst formula to calculate the total amount of savings S the account will generate. This function has no parameters as inputs, and it returns a double amount (the amount of savings) as its result. 6. Create a member function named planRetirementDeposits(). This function takes a double parameters S as input, which is the savings goal you wish to achieve. This function should implement the second equation given above. The function returns a double result, D which is the amount of money that should be deposited each period to meet the savings goal S.

*** put function documentation headers for each and every function in your program..

C++ please, I attached pictures of the starting template!

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