Norman Triplett Conducted a Study Measuring the Performance of Children

Norman Triplett conducted a study measuring the performance of children playing a simple game either alone or in the presence of another child. Triplett's results indicated that:

A) children playing the game in pairs performed equally to children playing alone.
B) children playing the game in pairs performed better than children playing alone.
C) children playing the game alone performed better than children playing in pairs.
D) older children playing the game performed better irrespective of whether they were alone or with another child.