please help with all these

Which most correctly represents the electron reorganization in the rate determining, or slow step, in the acid catalyzed E1 dehydration of this alcohol? (A) (B) (C) (D) What R andior S configuration notation would be used for this structure? (A) 2R,3R (B) 2S,3R (C) 2R,3S (D) 2.5,3S Which choice ranks these compounds from strongest to weakest acid? (A) 1>3>2>4 (B) 2>4>3>1 (C) 4>2>3>1 (D) 4>3>2>1