Prepaid insurance accounts had a beginning balance of P45,000.At the end of the accounting period, it had a balance of P7,500.Accumulated depreciation had a balance beginning balance of P30,000 and an end of the period balance of P45,000.The change in account balances of these two accounts resulted in total expenses changing by

increase of P100,000

decrease of P100,000

decrease of P52,500

increase of P52,500