Who is C's partner in a game of cards involving four players A, B, C and D ?
   (I) D is sitting opposite to A.
   (II) B is sitting right of A and left of D.

A. I alone is sufficient while II alone is not sufficient

B. II alone is sufficient while I alone is not sufficient

C. Either I or II is sufficient

D. Neither I nor II is sufficient

E. Both I and II are sufficient