Use the Following Scenario to Answer the Next Eight Questions

Use the following scenario to answer the next eight questions:
Rosa and Dirk produce basketballs and footballs. Rosa can produce six basketballs per hour or two footballs per hour. Dirk can produce three basketballs per hour or four footballs per hour.
-Based on the scenario,Rosa's opportunity cost of one football is:

A) 4 basketballs.
B) 1 1/2 basketballs.
C) 6 basketballs.
D) 3 basketballs.
E) 8 basketballs.