I think all the following expressions are communicable in every day English, but I want to know which one is not grammatical - especially (A) and (B) - or idiomatic and the nuances of them. Thanks in advance.
- (A) Unless there are seats on the airplane, I will take a bus.
- (B) Unless there are airplane seats, I will take a bus.
- (C) Unless there is any seat on the airplane, I will take a bus.
- (D) If there are no seats on the airplane, I will take a bus.
- (E) If there aren't any seats on the airplane, I will take a bus.
- (F) If there isn't any seat on the airplane, I will take a bus.
- (G) Unless there are any seats on the airplane, I will take a bus.