Robbie Is 20 Months Old and for the First Time

Robbie is 20 months old and for the first time he watched his father shave this morning.Two days later his mother claims that he climbed up to the sink and began imitating the father's shaving ritual with his toothbrush.In this case,is the mother's claim plausible?

A) yes, because children begin to show imitation of novel behaviours during the second year
B) yes, because children begin to show imitation of novel behaviours at 6 months of age
C) no, because most children do not show imitation of novel behaviours until they reach the concrete operational stage of cognitive development
D) no, because most children do not show imitation of novel behaviours until they reach the preoperational stage of cognitive development