The Table Below Shows the Percentage of the Labour Force

Multiple Choice

The table below shows the percentage of the labour force accounted for by males and females over a two-decade period.Assume that real GDP is equal to potential in each of the given years. % of Labour Force TABLE 30-4
Refer to Table 30-4.Suppose that for each year listed the unemployment rate among males is 5% while it is 7% among females.By how much does this economy's NAIRU change between 1960 and 1975?

A) It decreases by 1 percentage point.
B) It remains the same.
C) It increases by 0.5 percentage point.
D) It increases by 0.3 percentage point.
E) It increases by 0.2 percentage point.