A Liquid Is Irregularly Stirred in a Well-Insulated Container and Thereby

Multiple Choice

A liquid is irregularly stirred in a well-insulated container and thereby undergoes a rise in temperature.Regarding the liquid as a system,you can say that

A) heat has been transferred.
B) the rise in temperature indicates work done by the system.
C) the internal energy has been unchanged.
D) the work done by the system equals the work done on the system.
E) there is a positive change in internal energy.