The following selected transactions were completed by Cota Delivery Service during July: Indicate the effect of each transaction on the accounting equation by choosing the appropriate letter from the following list: a. Increase in an asset, decrease in another asset. b. Increase in an asset, Increase in a liability. c. Increase in an asset, increase in stockholders' equity. d. Decrease in an asset, decrease in a liability. e. Decrease in an asset, decrease in stockholders' equity. 1. Recelved cash in exchange for common stock, $50,000. 2. Purchased supplies for cash, $1,800. 3. Paid rent for July, $4,500. 4. Paid advertising expense, $1,200. 5. Received cash for providing delivery services, $11,500. 6. Billed customers for dellvery services on account, $33,970. 7. Paid creditors on account, $900. 2. Purchased supblies for cash, $1,800. 3. Paid rent for July, $4,500, 4. Paid advertising exbense, $1,200. 5. Recelved cash for nroviding delivery services, $11,500. 6. Billed customers for delivery services on account, $33,970, 7. Paid creditors on account, $900. 8. Received cash from customers on account, $27,500. 9. Determined that the cost of supplies on hand was 5300 and $1,500 of supplles had been used during the month