Ayayai Company uses a perpetual inventory system. Its beginning inventory consists of 70 units that cost $48 each. During June, (1) the company purchased 210 units at $48 each, (2) returned 8 units for credit, and (3) sold 175 units at $70 each. 1. Journalize the June transactions (four entries) 2. If you had used the periodic system instead, explain how each of the four entries in part 1 would have been different (you do not have to actually write the journal entries)