39. Which（哪一個）picture is Jack talking about（談論）?
(A) Father, mother, Jack, Emily and a puppy sitting on the floor（地板）.
(B) Father, mother, Jack, and Emily with a puppy in her arms.
(C) Father, mother, Jack, and a puppy in Jack’s arms.
(D) Father, mother, Jack, Emily and a running puppy.