Jill Does Twice as Much Work as Jack Does and in Half

Multiple Choice

Jill does twice as much work as Jack does and in half the time. Jill's power output is

A) the same as Jack's power output.
B) four times Jack's power output.
C) twice Jack's power output.
D) one-half as much as Jack's power output.
E) one-fourth as much as Jack's power output.