This is programmed in java need help.

Wireless Service Provider) A Wireless service provider has three different packages for its customers: Package A: For $29.99 per month 2GB of data is provided. Additional data is $10.00 Package B: For $39.99 per month 4GB of data is provided. Additional data is $5.00 Package C: For $49.99 per month unlimited data is provided. per GB per GB Write a program that calculates a customer's monthly bill. It should ask which package the customer has purchased and how many GB of data was used. It should then display the total amount due. The program should recommend which package is the best for the customer Input Validation: Be sure the user only select package A, B or C. Also the GB used has to be between 0 and 50