The analog signals that carry analog or digital data comprise composites built from combinations of simple sine waves. a. true b. false

The analog signals that carry analog or digital data comprise composites built from combinations of simple sine waves. 
a. True 
b. False

What are the choices for this question?

Placeholders  are the containers in  layouts  that hold such content as  text  (including body  text, bulleted lists, and titles),  tables,  charts, smartart graphics, movies, sounds, pictures, and clip art.  slide layouts  also contain the theme (colors, fonts, effects, and the background) of a  slide.