A．Only one out of four girls cries less often than boys.
B．Of four boys, only one cries very often.
C．Girls cry four times as often as boys.
D．Only one out of four babies doesn’t cry often.

A．The personnel manager should be fired for inefficiency.
B．A few engineers should be employed to modernize the factory.
C．The entire staff should be retrained.
D．Better-educated employees should be promoted.