In One of the Earliest Social Psychological Experiments,Triplett (1898)had Children

In one of the earliest social psychological experiments,Triplett (1898) had children wind fishing reels as quickly as they could.What did he find?

A) The children were fastest when observed by the experimenter.
B) Winding times were faster without an audience than with an audience.
C) The children were faster when working next to another child rather than alone.
D) The children were faster working alone than with a partner.