Question #N948

Which choice correctly combines the two sentences to make a grammatically correct complex sentence? The museum curator had seen the exhibit in the magazine. She knew it would be popular.
A. The museum curator had seen the exhibit in the magazine, so she knew it would be popular.
B. The museum curator had seen the exhibit in the magazine; she knew it would be popular.
C. The museum curator had seen the exhibit in the magazine, she knew it would be popular.
D. The museum curator had seen the exhibit in the magazine, because she knew it would be popular.