After the sentence, a list of possible interpretations of the sentence is given. Choose the interpretation that you consider most appropriate for the sentence.

Due to poor visibility all aircraft were grounded at the Kano Airport for two days. This means that.

• A. all aircraft had mechanical problems
• B. the runway at Kano Airport was damaged
• C. no aircraft could take off
• D. there was a visible disturbance at Kano Airport