The attitudes of classes have made inroads into lexical meaning

The attitudes of classes have made inroads into lexical meaning in the case of elevation or（）
A、extension
B、narrowing
C、degradation
D、clipping
【正确答案】：C
【题目解析】：在升格或者降格的案例中，阶级的态度也逐渐渗透到词汇意义中。