A producer can sell any quantity of a commodity at a given price of 10 per unit. His cost schedule is given below:
| Output (Units) | 1 | 2 | 3 | 4 | 5 | 6 |
| Total Cost (in Rs.) | 12 | 22 | 31 | 38 | 48 | 60 |
How many units should he produce to get maximum profits? Explain.