Calco, Inc., rents its store location. Rent is $6,000 per month, payable quarterly in advance. On July 1, a check for $18,000 was issued to the landlord for the July–September quarter. 1. Required information Requirement 1: a. Prepare the Horizontal model for each of the following transactions. To record the payment on July 1, assuming that all $18,000 is initially recorded as Rent Expense. To record the adjustment that would be appropriate at July 31 if your entry in a had been made. To record the initial payment on July 1 as Prepaid Rent. To record the adjustment that would be appropriate at July 31 if your entry in c had been made. To record the adjustment that would be appropriate at August 31 and September 30, regardless of how the initial payment on July 1 had been recorded (and assuming that the July 31 adjustment had been made). (Enter decreases to account balances with a minus sign.)