What is the significance of the 'churn pressure' (shut-off pressure) of a fire pump in relation to standpipe system components?
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A
It is the minimum pressure the pump can produce
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B
It is the maximum pressure the pump produces at zero flow, which system components must be rated to withstand
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C
It is the pressure set on the pressure relief valve
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D
It is the pressure at which the pump automatically shuts down