The above table shows production combinations on a country's production possibilities frontier. Which of the following points signifies efficient production?
A) 12 units of good X and 1 unit of good Y
B) 10 units of good X and 16 units of good Y
C) 0 units of good X and 40 units of good Y
D) 3 units of good X and 25 units of good Y
Answer: C