Posting a Job Opening on a Major Job Board Such

Posting a job opening on a major job board such as Monster is often

A) a company's first step in seeking promising candidates.
B) helpful for high-tech companies,but not for others.
C) the most successful way for companies to discourage unqualified candidates from applying.
D) an effective way for companies to limit the number of applications they receive.
E) a company's last resort,after it has exhausted other possibilities for finding desirable candidates.