There are three consumers in the market for playing cards: Don, John, and Ron. At a price of $2 per pack, the quantities demanded by each are 3 packs, 2 packs, and 1 pack, respectively. At a price of $1.50 per pack, the quantities demanded by each are 4 packs, 5 packs, and 3 packs, respectively. Which of the following is true

A. The market demand curve for playing cards does not follow the law of demand.
B. The decrease in price causes the quantity demanded in this market to increase by 6 packs.
C. The price decrease causes Don’s demand curve to shift more than Jon’s and Ron’s.
D. At a price of $1 per pack, the quantity demanded in this market must be 20 packs.
E. Don’s behavior does not follow the law of demand.

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.