Could you choose which sentence belongs to the closing part ? (7.0分) A. Much to my regret, I am writing to place a complaint against one of your shop assistant. B. Our friend asked one of your shop assistants, whose badge number was 15 if I got it right, to remove the dust from some bronze statues, so she could have a good look at them. C. She rudely turned a deaf ear to the request and walked away murmuringsomething unpleasant. D. Looking forward to hearing from you.