Which of the following statements is true according to this passage
A．If an offender breaks the probation order and commits no further offense, no other penalty is imposed.
B．If an offender complies with the probation order, he will be punished merely for the original offense.
C．If an offender in the U.S. breaks the probation order, he has to serve a sentence fixed in advance.
D．If an offender in Britain breaks the probation order, he has to serve a fixed sentence for a specified period.