关于可摘局部义齿修复后牙咬腮的方法，错误的是（）

A.加大后牙覆盖

B.调磨过锐的余留牙尖

C.适当升高平面

D.加厚基托推开颊肌

In a certain game, a large container is filled with red, yellow, green and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 147,000, how many red beads were removed ？（）

A.5

B.4

C.3

D.2

E.0