Which Enzymes Are Most Likely to Not Be Affected by an Increase

Which enzymes are most likely to not be affected by an increase in temperature?

A) Enzymes isolated from bacteria that colonize geothermal vents at the bottom of the ocean
B) Enzymes isolated from the gut of a fish that lives in temperate lakes and streams
C) Enzymes isolated from the intestines of mammals
D) Enzymes isolated from the lymph of shrimp species that live in the Arctic Ocean
E) Enzymes isolated from the blood of tropical birds