单选题 In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B．If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
(A) 15 (B) 25
(C) 30 (D) 35
(E) 40

【正确答案】 D
【答案解析】[解析] 由题意可知，在这100个玩具中红色的玩具有25个，蓝色的玩具有75个，根据100个玩具中10个是红色A型，可推知红色B型玩具是15个，而B型共50个，所以蓝色B型有35个。