Consider the following table {:("Production Possibilities",A,B,C,D,E),("Guns (Units)",0,1,2,3,4),("Butter(Units)",10,9,7,4,0):} The opportunity cost of increasing guns production form 2 to 3 units is ____ units of butter.

Consider the following table {:("Production Possibilities",A,B,C,D,E)

1.	Consider the following table {:("Production Possibilities",A,B,C,D,E),("Guns (Units)",0,1,2,3,4),("Butter(Units)",10,9,7,4,0):} The opportunity cost of increasing guns production form 2 to 3 units is ____ units of butter.
Answer» 7 2 7 3 Solution :D.