Answer:
The answer is: E) $5.30
Step-by-step explanation:
The first 500 cups are sold at $10.50 per cup.
Then cups 501 to 1,000 are sold at $10.25 per cup.
Cups 1,001 and beyond are sold at $10 per cup.
The cost of producing one cup of coffee is $4.70 regardless of how many cups are produced.
The 1,125th cup will be sold at $10 and cost $4.70, the marginal revenue is $5.30.