This is a boldface question. The first sentence, including the first bolded statement, refers to an occurrence that will probably function as evidence. The second sentence is a claim made based on the occurrence in the first sentence. The third sentence--the second bold statement--partially contradicts the previous statement, suggesting that the same event will lead to an unexpected conclusion.
Each of the choices has a plausible characterization of the first statement; only one is correct on the second statement. The correct choice is (C), as it correctly describes the second statement as contradictory to the prediction in the previous sentence.