You are choosing between two​ long-distance telephone plans. Plan A has a monthly fee of ​$ with a charge of ​$ per minute for all​ long-distance calls. Plan B has a monthly fee of ​$ with a charge of ​$ per minute for all​ long-distance calls. Complete parts a and b.

It seems that there is missing information in your question. The monthly fee for Plan A and the charge per minute for both plans are not specified. Therefore, I am unable to complete parts a and b without this crucial information. Please provide the missing values so that I can assist you further.