Grammar Question. Which choice is correct?

freesn3
Wed, 30 Jul 2008 20:09:36 +0000

A: The couple to whom Sheila agreed to sell the house did not offer the higest price but did treat her with the greatest respect

B: The couple who Sheila agreed to sell the house to did not offer the higest price but did treat her with the greatest respect

C: The couple, Sheila agreed to sell the house to them, did not offer the highest price but did treat her with the greatest respect

D: The couple to whom Sheila agreed to sell the house did not offer the highest price but did treat her with the greatest respect

E: The couple that Sheila agreed to sell the house to offered not the highest price but did treat her with the greatest respect

Thanks! And an explanation would really help. THanks!