A. which price B. the price of whose

C. its price D. whose price

【答案】D

【解析】考查定语从句。句意：最近我买了一辆价格非常便宜的二手车。________ was very low.

是一个定语从句，修饰先行词a secondhand car，关系词在从句中作定语，修饰price，所以选D。