Quintin works 8 hours every day. He estimated that it would take him 6 days to build some cabinets. He charges $28 an hour for his labor. He quoted Mr. Rodriguez $1,340 for the job. What was the result of his estimate?

A. His estimate was accurate; both parties received exactly what they should.

B. His estimate was close enough; both parties received a fair deal.

C. His estimate was too low; Quintin has undercharged Mr. Rodriguez.

D. His estimate was too high; Quintin has overcharged Mr. Rodriguez.