As a Part of Your Job Seeking Efforts, Directly Calling

As a part of your job seeking efforts, directly calling potential employers, or "cold calling," is:

A) Effective if used properly, such as creating a positive impression.
B) Effective only if referred by your career services department.
C) Ineffective because it may interfere with the employer's daily operations.
D) Ineffective unless there is a job posting for a position.