Assume that a mechanical engineer is hired to design the heating, ventilation, and air conditioning system for an office building. In assessing what kind of chiller to install, the engineer determines that one make and model would be marginally adequate but might fail in the event of high demand, whereas a larger make and model would be adequate but would cost substantially more. The engineer is aware that the client is on a tight budget and had rejected requests for upgrade.

(a) Explain what might happen if the engineer selects and installs the less expensive unit?

(b) Explain what might happen if the engineer selects and installs the more expensive unit?

(c) If you were the engineer, what would you do contrary to (a) and (b)?