Answer and Explanation:
The economic profit is
Economic profit = Total revenue - (Explicit costs + Implicit costs)
where
Total revenue is $100,000
Explicit costs are $70,000
Implicit costs are $10,000 (opportunity costs)
Now
Economic profit = $100,000 - $70,000 - $10,000
= $20,000
In the case of small cars that within 6000 lbs, the depreciation should be capped at $18,000 for the first year
Hence, the option b is correct