CFPS Dumps Question No 1

Question No 1:

When evaluating dipping and coating processes, flammable liquid vapors are usually.
 
A. Denser than air, therefore, flow to high points.
B. Lighter than air, therefore, flow to low points.
C. Denser than air, therefore, flow to low points.
D. Lighter than air, therefore, flow to high points.

Answer: D