Two-Year-Old Children Watched a Human Model Using a Tool Either

Two-year-old children watched a human model using a tool either efficiently or inefficiently and then themselves interacted with the tool.Which statement is TRUE?

A) Only the toddlers observing efficient behaviour used the tool,but use was not efficient.
B) Only the toddlers observing efficient behaviour used the tool,and use was efficient.
C) Both groups used the tool in the manner that they observed.
D) Both groups used the tool but did not differ in their efficiency.