69. A firm’s average fixed cost is Rs.20 at 6 units of output. What will it be at 4 units of output?

✅ ANSWER: B
Average fixed cost per unit is Rs. 20 when 6 units of product produced.
Total fixed cost = 6 X 20 = Rs. 120.
Therefore fixed cost per unit when production is 4 units = 120/4 = Rs.30