ENGLISH HELP !!
( Which of the following is the clearest and most effective sentence? )

A. John is a man with a sister who is attractive, and they both went to a party together.
B. John's sister was the prettiest girl at the party.
C. The party included attractive females of all ages, and one was a sibling of a man known as John.
D. The sister of John was attractive more than others who attended a party.