Finding an incorrect sentence. The following question below requires me to select one sentence that is grammatically incorrect out of those four sentences. I have been trying to figure out, but it is not easy for me. I'm not definitely sure but I guess at least (B) and (D) seems to be correct enough. Could you someone help me find the answer? And please give me the correction. ..................................................................................................................................................... (A) The Peterborough Pumpkin Festival wrapped up last night with a fireworks display at the lake. (B) According to unofficial statistics, attendance this year was thirty percent higher than in 2009. (C) To have prepared for weeks, the festival's organizers say they were pleased with the high turnout. (D) Barring any unforeseen problems, they say, next year's festival promises to be a greater success.