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