| Which of the listed sequence of events occurs when an automatic auxiliary boiler is prepurged? |
| A) The damper on the inlet side of the furnace is moved to the open position for a given number of seconds and then moved to the closed position. |
| B) The damper on the inlet side of the furnace is moved to the open position for a given number of seconds and then moved to the low fire position. |
| C) The damper is moved to the closed position for a given number of seconds and then moved to the low fire position. |
| D) The damper in the uptakes is moved to the wide open position for a given number of seconds and then moved to the low firing rate position. |
