---How do you like this skirt?

---It's beautiful and it fits me well, ________ I like it very much．

1. A.
   but
2. B.
   for
3. C.
   so
4. D.
   since

－How do you like this skirt?

－It's beautiful and it fits me well, ____ I like it very much.

A. but

B. for

C. so

D. since