Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Assume that a worker in country A can produce 20 units of iPad or 10 units of iPhone in one year, and a worker in country B can produce 16 units of iPad or 4 units of iPhone in one year. Which of the following statements is most accurate?
Option A:Country A cannot benefit from trade with country B since country A has an absolute advantage.
Option B:Country B has a comparative advantage in producing iPhone.
Option C:Country A has a comparative advantage in producing iPhone.

Answer: C