1 .    Mothers have long known that their home workload was just as heavy as paid work.Now，the new study has shown that if they were paid for their parental labours，they would earn as much as ￡172,000 a year.The study looked at the range of jobs mothers do，as well as the hours they are working，to determine the figure.This would make their yearly income ￡30,000 more than the Prime Minister earns.
How much would a mother earn a year if working as the Prime Minister?

A．￡30,000.	B．￡142,000.
C．￡172,000.	D．￡202,000.