The water level indicated in a boiler gauge glass is:
a. Slightly less than the actual drum level.
b. The actual drum level, regardless of operating conditions
c. Slightly higher than the actual drum level when the pressure is high.
d. Slightly higher than the actual drum level when the boiler is on low fire.
e. Considerably higher or lower than the actual drum level, depending on the firing rate of the boiler.
Answer: A