An Educator Can Communicate Important Health Promotion Messages Quickly to Wide

An educator can communicate important health promotion messages quickly to wide and diverse audiences, or to a specific population by developing public service announcements (PSAs) for radio or television. Radio PSAs are usually:

A) 10, 30, and 35 seconds long.
B) 10, 20, and 30 seconds long.
C) 8, 13, and 18 seconds long.
D) None of these is correct.