Have you ever been to Mount Huangshan, _____ is famous for its towering pine forests and "sea of clouds"?

A. which                  B. where                      C. that                    D. what

Have you ever been to Mount Huangshan, _____ is famous for its towering pine forests and "sea of clouds"?

1. A.
   which
2. B.
   where
3. C.
   that
4. D.
   what

Have you ever been to Mount Huangshan, ______is famous for its towering pine forests and "sea of clouds"?
A. which                B. where            C. that                  D. what