Answer: b. Other suppliers introduced digital music players to meet the demand.
Explanation: When a new product is launched in the market at a higher price, it enables sellers to attract a large amount of profit. These profits will induce other sellers to enter the market. This will make other suppliers introduce digital music players to meet the demand. Therefore, b is the correct option.
Market for digital players is fairly competitive, therefore a cannot be the correct option. c is not correct because consumers who have a preference for digital players will not get affected by the price.