When an Experimenter Asks Anisa, "What Would Happen If Horses

When an experimenter asks Anisa, "What would happen if horses walked around on two legs?" she refuses to answer the question and adamantly states, "But, horses can't walk on two legs!" A Piagetian researcher seeing this would likely say that Anisa is

A) capable of hypothetical-deductive reasoning.
B) not yet capable of imaginative play.
C) capable of abstract thinking.
D) not yet capable of suspended belief.
E) not yet capable of abstract thinking.