If a permanently installed electric baseboard heater has factory-installed receptacle outlets, the receptacle is permitted to be connected to the heater circuits.
See answer and applicable Code reference
The correct answer is: b) False
Article 424 covers fixed electric equipment used for space heating. As noted in a portion of Sec. 424.9, "Permanently installed electric baseboard heaters equipped with factory-installed receptacle outlets, or outlets provided as a separate listed assembly, shall be permitted in lieu of a receptacle outlet(s) that is required by 210.50(B)."