GE Uses "Imagination at Work" as Its Slogan

GE uses "Imagination at Work" as its slogan.La-Z-Boy Incorporated uses the slogan "Comfort.It's what we do." Why do these international companies find it necessary to use slogans?

A) To prevent ad obfuscation
B) To ensure the achievement of the advertiser's marketing objectives
C) To create a euphemistic image
D) To provide continuity for an ad campaign
E) To provide quick recognition at the point of purchase