After Reading the Paragraph Below, Answer the Question That Follows

After reading the paragraph below, answer the question that follows.
Akiak is an Inuit fisherman. He noticed that on the coldest days of winter, which are below -30°C, the fish he catches from the Arctic Ocean are freezing as soon as he brings them to the surface. This seems puzzling, since these fish are known to produce antifreeze proteins.
-Why are the fish freezing in air?

A) because even when air temperature is -30°C, water temperature in the Arctic Ocean never falls below -2°C and the antifreeze is effective at that temperature
B) because the specific heat capacity of air is greater than that of water
C) because the thermal conductivity of air is greater than that of water, so it pulls heat out of the fish more quickly
D) because the fish are caught singly and therefore are not able to huddle together as they do in water to stay warm