Requirement 1: a. Prepare the Horizontal model for each of the following transactions. The purchase of the paper napkins, assuming that the purchase was initially recorded as an expense. At January 31, it was estimated that the cost of the paper napkins used during the first three weeks of the semester totaled $960. The purchase of the paper napkins, assuming that the purchase was initially recorded as an asset. At January 31 if the initial purchase had been recorded as in c. (Enter decreases to account balances with a minus sign.)