The film was a great success. This was thanks to its interesting plot. A. The film wouldn’t be a great success if its plot weren’t interesting. B. The film would have been successful if its

The film wouldn’t be a great success if its plot weren’t interesting.

The film would have been successful if its plot had been interesting.

Without its interesting plot, the film would have been a great success.

If it hadn’t been for its interesting plot, the film wouldn’t have been successful.