At one point along a PPF, 50 tons of coffee and 100 tons of bananas are produced. At another point along the same PPF, 30 tons of coffee and 140 tons of bananas are produced. The opportunity cost of a ton of coffee between these points is:}
A) 7/5 of a ton of bananas.
B) 5/7 of a ton of bananas.
C) 2 tons of bananas.
D) 1/2 of a ton of bananas
Answer: C