They couldn't climb up the mountain because of the storm
Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to the following question.
They couldn't climb up the mountain because of the storm.
A. Their climbing up the mountain was unable due to the storm.
B. The storm discouraged them from climbing up the mountain.
C. The storm made it impossible for them to climb up the mountain.
D. The storm made it not capable of climbing up the mountain.