Which Porcelain Crabs,those Living in Cool Temperate Regions or Those

Multiple Choice

Which Porcelain crabs,those living in cool temperate regions or those living in hot tropical regions,appear to be more vulnerable to global warming and why?

A) Species living in cool temperate regions appear to be more vulnerable because it is harder to adapt to heat than to cold.
B) Species living in cool temperate regions appear to be more vulnerable because these species require cold temperatures to reproduce.
C) Species living in hot regions appear to be more vulnerable because they are living at the edge of their thermal tolerance range and likely have limited ability to adjust their thermal tolerance.
D) Species living in hot regions appear to be less vulnerable because they are already adapted to hot environments.