The Media Multiplier Effect Means

The media multiplier effect means:

A) the combined impact of using two or more media is stronger than using either medium alone
B) the combined effect of television and magazines will increase recall by at least 25%
C) the use of both trade journals and consumer journals for business-to-business ads will have a greater impact than using either medium alone
D) that if three different media are used, the combined impact is greater than if only two different media are used