GMAT Critical Reasoning (CR) | Q40: Two centuries ago, Tufe Peninsula became separated form

A.There are no types of vegetation on Tufe Island that are known to benefit from dry conditions. -- We're only concerned about Turfil sunflowers.
B.There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today. -- The number of sunflowers is irrelevant.
C.The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago. -- Correct
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