Answer:
d. the firm will lose $750
Explanation:
marginal cost is the derivate of the cost function: It represent the cost of producting an additional unit
cost: 750 + 5q
dC/dQ = 5
We have determinate that marginal cost is $5 thus, we should price at the same value. The mistake from the goverment is to equalize marginal cost with price instead of marginal revenue.
This will make the firm loss the fixed component of the cost as will sale to pay up the variable cost.
The fixed cost is $750 so that is the loss from operations