The cost of the average computer logic device is falling at the rate of 25 percent per year, and the cost of the average computer memory device at the rate of 40 percent per year. It can be concluded that if these rates of cost decline remain constant for a period of three years, at the end of that time the cost of the average computer memory device will have declined by a greater amount than the Cost of the average computer logic device.
Accurate information about which of the following would be most useful in evaluating the correctness of the conclusion above
A．The number of logic devices and memory devices projected to be purchased during the next three years.
B．The actual prices charged for the average computer logic device and the average computer memory device.
C．The compatibility of different manufacturers’ logic devices and memory devices.
D．The relative durability of logic devices and memory devices.
E．(E) The average number of logic devices and memory devices needed for an average computer system.
