Given the Continuing Decline in Manufacturing's Share of Total Employment

Given the continuing decline in manufacturing's share of total employment in Canada and other developed economies, which of the following provides a possible explanation that this phenomenon is a genuine problem?

A) Productivity increases in the service sector are likely underestimated.
B) Many service jobs are low- wage, part- time, jobs, and many are without benefits.
C) The decline is partly due to increasing productivity in that sector.
D) Real disposable income has continued to rise.
E) Consumers have an increased demand for services as real income increases.