Based on the Graph Below, What Are the Optimal Temperatures

Based on the graph below, what are the optimal temperatures for the human enzyme and the hotsprings prokaryote enzyme?

A) The optimal temperature for the human enzyme is 46^oC; the optimal temperature for the hotsprings prokaryote enzyme is 79^oC.
B) The optimal temperature for the human enzyme is 30^oC; the optimal temperature for the hotsprings prokaryote enzyme is 60^oC.
C) The optimal temperature for the human enzyme is 35^oC; the optimal temperature for the hotsprings prokaryote enzyme is 65^oC.
D) The optimal temperature for the human enzyme is 40^oC; the optimal temperature for the hotsprings prokaryote enzyme is 72^oC.