Which of the following is true regarding functional products?
A. Functional products have unstable & unpredictable demand, and high profit margins.
B. Functional products satisfy basic needs, have stable & predictable demand, and long lifecycles.
C. Functional products have unstable & unpredictable demand, and low profit margins.
D. Functional products satisfy basic needs, have unstable and unpredictable demand, and longlife cycles.