If the low-water fuel cutoff and/or the high limit control are equipped with a trip-out device on a boiler, it is recommended as part of the startup preparation to
a) dismantle the device and check for lose wires
b) push the reset button to assure that the switches are closed
c) check the low-water fuel cutoff and make sure all the mercury switches are working properly
d) check that the high limit switches are set high enough
e) dismantle the high limit switches and overhaul if necessary
Answer: b