On June 1st, Michelob signed up and paid $1,200 to Master Brewer Inc. for a 6 month brewing course that started on the same date. As of July 31st, Master Brewer's accounting records would indicate:

A) $400 of revenue, $800 of accounts receivable

B) $400 of revenue, $800 of deferred revenue

C) $1,200 of revenue, $1,200 of cash

D) $800 of revenue, $400 of accounts receivable