Two men are battering each other to pulp in the boxing ring.

A．Not two people need exactly the same amount of living space
B．Living space requirements are not always the same
C．The world requires the same amount of living space
D．Nobody needs a required amount of living space

A. deal with problems rather than blame others
B. meet with fewer difficulties in their lives
C. have responsible and able colleagues
D. blame themselves rather than others