If $1,440 Deferred Revenue was earned in January and recorded as Service Revenue, what was the balance in Deferred Revenue at January 1? Assume there were no other transactions that affected Deferred Revenue during January because no customers paid the company anything in advance during the month of January. (Hint: Prepare the January entries for this transaction, post to the Deferred Revenue T account, and work backward to determine the opening balance.)deferred revenue on jan 31 was 800