如图所示，在竖直平面内有半径为R="0.2" m的光滑1/4圆弧AB，圆弧B处的切线水平，O点在B点的正下方，B点高度为h="0.8" m。在B端接一长为L="1.0" m的木板MN。一质量为m="1.0" kg的滑块，与木板间的动摩擦因数为0.2，滑块以某一速度从N点滑到板上，恰好运动到A点。 (g取10 m/s²)求：

(1)滑块从N点滑到板上时初速度的速度大小；

(2)从A点滑回到圆弧的B点时对圆弧的压力；

(3)若将木板右端截去长为ΔL的一段，滑块从A端静止释放后，将滑离木板落在水平面上P点处，要使落地点P距O点最远，ΔL应为多少？

Gabrielle Daniels and Edin Roth, CFA candidates, are discussing the relationship between a bond’s coupon rate and the required market yield. Looking through the local newspaper, they see a new-issue, 10-year, $1000 face value 8.00 percent semi-annual coupon bond priced at $950. Daniels makes the following statements. Which statement does Roth tell her is CORRECT （）

A. The current market required rate is less than the coupon rate.

B. The bond is selling at a premium.

C. The bond is selling at a discount.