Canada can produce 500 aircrafts or 2000 pencils whereas Brazil can produce 300 aircrafts or 2500 pencils.

Based on this data:

1. Which country has least opportunity cost of producing pencils? Explain your answer. (2 marks)

2. Which country has least opportunity cost of producing aircrafts? Explain your answer. (2 marks)

3. Which country should export pencils? (1 mark