A person is choosing between two cellphone plans. Data Plan A has a monthly fee of ​$ with a charge of ​$ per gigabyte​ (GB). Data Plan B has a monthly fee of ​$ with a charge of ​$ per GB. Complete parts a and b below.

What is being asked in parts a and b?

Apologies, but it seems there might be a typing error in the question. Could you please provide the missing values for the monthly fees of Data Plan A and Data Plan B?

I see that there are missing values in the question. Please provide the complete information about the monthly fees and charges for Data Plan A and Data Plan B, so I can provide a detailed explanation for parts a and b.