Answer:
The correct answer is A
Explanation:
Marginal cost is defined as the change in the aggregate cost which arises when the quantity produced or manufactured is incremented or increase through single unit.
In short, it is stated as the cost of producing the one more unit of the product or the good.
The marginal cost will be computed as:
= Earlier therms × Increase in therms
= $4 million × $5 million
= $20 million
Therefore, the marginal cost of the therms is $20 million
