Hi im stuck on part 3, plewase show me how code the input validation for this situation.

Mobile Service Provider A mobile phone service provider has three different subscription packages for its custom Package A: For $39.99 per month 450 minutes are provided. Additional minutes are minute. Package B: For $59.99 per month 900 minutes are provided. Additional minutes are minute. Package C: For $69.99 per month unlimited minutes provided. Write a program that calculates a customer's monthly bill It should ask which customer has purchased and how many minutes were used. It should then display the amount due. Input Validation: Be sure the user only selects package A, B, or C Mobile Service Provider, Part 2 Modify the Program so that it also displays how much money Package A customers would if they purchased packages B or C, and how much money Package B customers would s they purchased Package C. If there would be no savings, no message should be printed. Mobile Service Provider, Part 3 Months with 30 days have 720 hours, and months with 31 days have 744 hours. February, with 28 days, has 672 hours. You can calculate the number of minutes in a multiplying its number of hours by 60. Enhance the input validation of the Mobile Provider program by asking the user for the month (by name), and validating that the minutes entered is not more than the maximum for the entire month. Here is a table of months, their days, and number of hours in each