It is ________ work of literature that many people are desperate to have a copy of it．

1. A.
   so unusual a
2. B.
   such unusual
3. C.
   so unusual
4. D.
   such unusual a

It is _____ work of literature that many people are desperate to have a copy of it.

A. so unusual a    B. such unusual   C. so unusual    D. such unusual a