Which of the Following Is an Accurate Description of a Recruitment

Which of the following is an accurate description of a recruitment source?

A) Internships are among the most frequently used sources.
B) Realtors are a primary source for executive applicants.
C) Door hangers,bargain shoppers and welcome wagons are methods employed to locate job applicants.
D) Contingent workers would be used for operations with continuous and regular production needs.