Answer:
The correct answer is option a.
Step-by-step explanation:
Comparative advantage refers to the situation when an individual, firm or nation, can produce a good or service at a relatively lower opportunity cost than its competitors.
A producer that can produce a good at a lower opportunity cost is said to be specializing in the production of that good.
If a producer can produce a good at a relatively lower cost than any competitor, it implies that the producer has an absolute advantage in the production of that good.