Which of the Following Has Not Been Found to Be

Which of the following has not been found to be true of tool use?

A) Boys tend to be more motivated than girls to use objects to solve problems.
B) Girls are less likely than boys to spontaneously use an object to achieve a goal.
C) Girls are not as capable of using a tool to solve simple problems.
D) Boys tend to select the correct tool for a task more often than girls.