It has been said that fire is a good servant 9 but a bad master. While fire does for us what we want to do 9 nothing can be more helpful. When fire gets beyond our control, nothing is more harmful. Which of the following statements is true?
A.
In fact, fire is both helpful and harmful.
B.
As nothing is more harmful than fire, we'd better get rid of it.
C.
It is advisable for man to have a good servant control the fire.
D.
A bad master will always try to let fire get beyond control.