Direction: Evaluate the following word, accompanied by three sentences containing it. Determine the sentence(s) that accurately convey the meaning of the given word. 

PERNICIOUS

A. Through years of meticulous training, the martial artist honed a pernicious ability to anticipate and counter opponents' moves.
B. The explorer embarked on a pernicious expedition to the uncharted region, driven by an insatiable curiosity to unveil its mysteries.
C. The coral reef's pernicious ability to regenerate, even in adverse conditions, captivated marine biologists studying its resilience.