Why, according to Ehrenreich, are want ads unreliable predictors of jobs available?
A. There is a gap between when employers place ads and when jobs become
filled.
B. It is employers' insurance against turnover to place ads continuously.
C. Employers usually only place ads for high-paying jobs.
D. Employers are not able to accurately predict how many employees they will need.
E. Most low-wage jobs are advertised only on the Internet.