In General,what Is the Relationship Between the Cost of Building

Multiple Choice

In general,what is the relationship between the cost of building and installing an EC system and the cost of operating and maintaining it?

A) It costs about as much time,effort,and money to operate and maintain as to build and install a system.
B) It costs much more to build and install an EC system than to operate and maintain it.
C) It costs much more to operate and maintain an EC system than to build and install it.
D) There is no general relationship between the cost of building and installing an EC system and the cost of operating and maintaining it.