John is a WLAN engineer hired to perform a predictive analysis site survey for a 180,000 squarefoot building. This building space includes small walled offices and cubicles. If John performs a predictive site survey instead of a manual site survey, what advantages does he get? Each correct answer represents a complete solution. Choose all that apply.

A.
A predictive site survey is the most accurate method available to him.

B.
His amount of time consumed for accurate results in a predictive site survey is much less than a complete manual site.

C.
A predictive site survey will allow him to model different scenarios.

D.
He will be able to determine the interference values of any obstacles.