Speedy Delivery Service had the following selected transactions during April: Received cash from issuance of capital stock, $100,000. Paid rent for April, $4,200. Paid advertising expense, $3,000. Received cash for providing delivery services, $27,000. Purchased supplies for cash, $2,500. Billed customers for delivery services on account, $81, 200. Paid creditors on account, $8,300. Received cash from customers on account, $25,600. Determined that the cost of supplies on hand was $900; therefore, $1,600 of supplies had been used during the month. Paid dividends, $3,000. Indicate the effect of each transaction on the accounting equation by listing the numbers identifying the transactions, through, in a vertical column, and inserting at the right of each number the appropriate letter from the following list: Increase in an asset, decrease in another asset. Increase in an asset, increase in a liability. Increase in an asset, increase in stockholders' equity. Decrease in an asset, decrease in a liability. Decrease in an asset, decrease in stockholders' equity