In each production lot for a certain toy,
题型：单项选择题
问题：
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