There Is No Set Time That a Product Takes to Move

There is no set time that a product takes to move through its life cycle. But as a rule,

A) services are highly affected by social trends while tangible goods are not.
B) consumer products have shorter life cycles than business products.
C) business products typically show very short maturity stages.
D) technological change tends to lengthen product life cycles.
E) product life cycles are longer for ideas than for services.