Answer:
b. -$75.40.
Explanation:
Given;
Sale of 300 units of output for $45 per unit.
Sale of 301 units of output for $44.60
Difference in revenue earnings = 301 × 44.60 - 300 × 45
= 13424.6 - 13500
= -75.40
The sale of 301 units and 300 units at $44.60 and $45 respectively results in a marginal revenue of $75.40 (drop).
b is the right option.