Process I requires 20 units of fixed cost and 3 units of variable costs per piece, while process II required 50 units of fixed costs and 1 unit of variable cost per piece. For a company producing 10 pieces per day:
(a) Process I should be chosen
(b) Process II should be chosen
(c) Either of the two processes should be chosen
(d) A combination of the process I and process II should be chosen