You've been asked to design an application that will process the transactions for Jack of All Trades, which rents small power equipment to commercial and residential customers. The strCustomer variable will be used to determine whether a customer is commercial $($C$)$ or residential $($R$).$ Commercial customers receive a $10\%$ discount if they are members of the Rental Rewards Program. Residential customers receive a $5\%$ discount if they are members. The strMember variable will be used to determine whether the customer is $($Y$)$ or is not $($ N $)$ a member of the Rental Rewards Program.

You meet with the manager of Jack of All Trades and she tells you that she would like the clerks to ask customers whether they want their receipt printed, emailed, texted, or any combination of these choices. Based on this feedback, you decide to use $,$

a$.$ radio buttons

b$.$ check boxes

c$.$ text boxes

d$.$ labels