Our flight was delayed. This meant that we had to wait for hours at the airport. (Join these two sentences to make a new sentence)

A. Our flight was delayed, which meant that we had to wait for hours at the airport.

B. Our flight was delayed, which we had to wait for hours at the airport.

C. Our flight was delayed, whose meant that we had to wait for hours at the airport.

D. Our flight was delayed, when meant that we had to wait for hours at the airport.