【单选题】So firmly entrenched in the political economy has the minimum wage become that its latest increase to £5.35 ($10.08) an hour, caused little stir. Yet the introduction of a national pay floor in 1999 w...
A.
people do not care about the minimum wage any more.
B.
in the past, there were different minimum wage rates.
C.
new Labor will introduce new economic policies.
D.
a national pay floor is challenged by a few industries.