Q1) For the four cases given, compute net income (or net loss).  Caution: Not all of the items listed should be included in the  computation of net income.
|  | Case A | Case B | Case C | Case D | 
| Cost of goods sold | $60,000 | $30,000 | $60,000 | $110,000 | 
| Interest expense | $18,000 | $47,000 | $25,000 | $31,000 | 
| Cash | $3,000 | $4,500 | $2,100 | $6,000 | 
| Retained earnings | $50,000 | $15,000 | $31,000 | $70,000 | 
| Sales | $100,000 | $150,000 | $70,000 | $200,000 | 
| Accounts payable | $12,000 | $20,000 | $5,000 | $38,000 | 
| Rent revenue | $5,000 | $1,000 | $12,000 | $10,000 | 
| Machinery | $175,000 | $60,000 | $50,000 | $185,000 |