Please do the following problem:

Mobile Service Provider

A mobile phone service provider has three different subscription packages for its customers:

Package A: For $$39\mathrm{.}99$ per month $450$ minutes are provided. Additional minutes are $$0\mathrm{.}45$ per minute.

Package B: For $$59\mathrm{.}99$ per month $900$ minutes are provided. Additional minutes are $$0\mathrm{.}40$ per minute.

Package C: For $$69\mathrm{.}99$ per month unlimited minutes provided.

Write a C$++$program that calculates a customer's monthly bill. It should ask which package the customer has purchased and how many minutes were used. It should then display the total amount due.

Input Validation: Be sure the user only selects package A$,$ B$,$ or $C.$

For now, since we have not yet covered repetition, the only way to do the input validation is to end the program if the user enters something oth

C$.$IWindowslsystem$32$ cmd$.$exe

Enter Plan $($A$,$ B or C$)$ and number of minutes used this month. $220$

For Package B with $220\mathrm{.}00$ minutes of usage, your bill is:

$$59\mathrm{.}99$

Press any key to continue.