Had the advertisement for our product been better,...

Câu hỏi: Had the advertisement for our product been better, more people would have bought it.

A. Not many people bought our product because it was so bad.

B. Our product was of better quality so that more people would buy it.

C. Fewer people bought our product due to its bad quality.

D. Since the advertisement for our product was so bad, fewer people bought it.