Required $($be sure to label each part of your answers $(12$ a$,12$ b$,12$ c$)$:

$12.$a$.$ What is the name of the file that contains a record that stores the data regarding G$.$ H$.$ Allens unpaid invoice?

$12.$ b$.$ What is the name of the transaction file where the receipt of the check will be entered?

$12.$ c$.$ What are the names of the three files that need to be updated as a result of the receipt of the check from G$.$ H$.$ Allen?