Five-Month-Old Judy Sees a Novel Sight of Flowers Arranged in a Vase

Five-month-old Judy sees a novel sight of flowers arranged in a vase. The MOST important cue that would help Judy know whether she is seeing a single object or multiple objects is:

A) differences in the textures and shapes of the flowers and vase.
B) independent movement of the flowers as they are removed from the vase.
C) common movement as her mother moves the full vase from the counter to the table.
D) All of these cues are equally useful.