Under CFR contract, the goods are damaged during marine transport and the buyer suffers losses estimated at USD 1 000 due to natural calamity, USD 800 due to fortuitous accidents, and USD 2 000 due to extraneous risks.If the buyer has insured the goods for USD 1 000 000 against WPA before shiment, then the insurer should pay ( ) compensation to the buyer.
A. USD 3800
B. USD 1800
C. USD 3000
D. USD 2800