20. The following activities took place at Austin Company during the most recent year. Indicate whether each activity is a cash inflow (+) or cash outflow (-) and whether it is an operating (O), investing (I), or financing (F) activity. (10 points) Inflow/Outflow Activity 1. Interest received on loans made to outside entities 2. Repayment of the principal on loans 3. Payment to acquire productive assets 4. Proceeds from the sale of productive assets 5. Cash receipts from the sale of services