If a monopolist increases quantity by one unit, but sells the increased output at a slightly lower price:

A. all the previous units, which used to sell at a higher price, now sell for more.
B. the marginal revenue of selling a unit is more than the price of the unit.
C. because of higher output, the marginal revenue curve is above the demand curve.
D. marginal revenue is affected by adding one additional unit sold at the new price.

Which of the following is true about presentation methods for providing training? audiovisual techniques are most effective when they are used alone. mobile technologies include training methods such as on-the-job training, simulations, business games and case studies, behavior modeling, interactive video, and web-based training that require the trainee to be actively involved in learning. the typical users for teleconferencing include employees who are part of a workforce that spends most of its time traveling, visiting customers or various company locations and has limited time available to spend in traditional training activities. webcasting involves classroom instructions that are provided online through live broadcasts. classroom instruction is no longer a popular training method because of new technologies such as interactive video and computer-assisted instruction.