In a company that manufactures potato chips, which of the following is not a value-addedactivity? A: Washing the potatoes B: Peeling the potatoes C: Frying the potatoes D: Moving packages of chips to thewarehouse

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（） A: absence of engine log book B: serious corrosion on the hull C: one page missing in the oil record book D: paint peeling off some tailings in engine room