During a visual inspection of a newly installed string inverter, which of the following findings would be the MOST immediate cause for concern and require correction before commissioning?
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A
The inverter's cooling fins are warm to the touch.
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B
A warning label for 'PHOTOVOLTAIC POWER SOURCE' is missing from a nearby DC conduit.
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C
There is less than the manufacturer-specified clearance for ventilation around the unit.
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D
The DC input and AC output conduits are run parallel to each other for three feet.