(Table: Production in the United States and Germany)According to the Table

(Table: Production in the United States and Germany) According to the table, the opportunity cost of producing onesofa in the United States is _________, and the opportunity costof producing one sofa in Germany is _______.

A) two clocks; three clocks
B) 10 clocks; 27 clocks
C) 0.4 clocks; 0.33 clocks
D) 2.5 clocks; three clocks