—What ____ this in English?

    —It _____ a book.

    A. is, am            B. is, are             C. are, is            D. is, is

---What ______ this in English?
---It ______ a book.

1. A.
   is, am
2. B.
   is, are
3. C.
   are, is
4. D.
   is, is

—What ____ this in English?
—It _____ a book.