It is good practice to select steam coils which require at least 40% of coil capacity when air temperature is 1 degree C for which of the following reasons?
a) Steam flow is high enough at high temperature and prevents build-up and freezing of condensate
b) The load on the circulating fan is kept from overheating
c) The mixing valve will never cut out if capacity stays above 40%
d) To avoid hot condensate splashing
e) None of the above
Answer: A