下面词语中加点的字,读音全都正确的一组是 A、引擎(qing) 发酵(xiao) 滞纳金(zhi) 曲径通幽(qu) B、逆袭(xi) 角逐(jiao) 插娄子(lou) 瑕不掩瑜(yu) C、脖颈(jing) 烙印(lao) 钻牛角(zuan) 蒌靡不振(mi) D、推诿(wei) 缜密(zhen) 潜规则(qian) 稳操胜券(quan)All those second-hand goods are sold at before.A.30% as lower price asB.as 30% low price asC.30% as low a price asD.30% lower price than