求一道SAT语法题.（2010年10月28）

求一道SAT语法题.（2010年10月28）
(Wiriting a review of opening nignt,the production was panned by the Chronicle's theater critic.)
A.Wiriting a review of opening nignt,the production was panned by the Chronicle's theater critic.
B.Because he was wiriting a review of opening nignt,the production was panned by the Chronicle's theater critic.
C.Wiriting a review of opening nignt,the Chronicle's theater critic panned the production .
D.In a wiritten review of opening nignt,the production by the Chronicle's theater critic was panned.
E.Having wiritren a review of opening nignt,the production was panned by the Chronicle's theater critic.
这句子怎么理解,怎么断?