The Demand for Alaskan Fishermen Is the Same as the Demand

The demand for Alaskan fishermen is the same as the demand for deep-sea divers in Hawaii. The annual earnings of Alaskan fishermen is 30% higher than the earnings of Hawaiian deep-sea divers. What is a possible explanation for this?

A) Alaskan fishermen can work only part of the year, but deep-sea divers can work year round in Hawaii.
B) The amount of human capital needed to be a deep-sea diver must be greater than the amount of human capital necessary to be a fisherman in Alaska.
C) Alaskan fishermen must face discrimination that is not encountered by Hawaiian deep-sea divers.
D) Being a fisherman in Alaska must be more dangerous than being a deep-sea diver in Hawaii.