During the holiday I bought a CD player, _____ was rather reasonable. A. its price B. of which price

During the holiday I bought a CD player, _____ was rather reasonable.
A. its price B. of which price
C. the prices of which D. whose price
【答案】D
【解析】
【详解】考查非限制性定语从句。句意：我在暑假买了一个CD机，它的价格很合理。分析句子可知，CDplayer为先行词，在后面的非限制性定语从句中作price的定语，所以关系代词为whose。故选D项。