Which One of the Following Is NOT One of the Advantages

Multiple Choice

Which one of the following is NOT one of the advantages that control systems offer?

A) Inexpensive and easy to operate devices are used to change complex process variables
B) Compensation and correction for disturbances to the process system
C) Control of a system at a distance from the point where the change takes place
D) Improved cost to performance ratio
E) Control of a large power source from a smaller power control device