Unless the police can prove to the court that Ted has committed robbery,he______.

A．will not find guilty

B．will not be found guilty

C．will have found guilty

D．will not have found guilty

质量为m的球置于倾角为θ的光滑斜面上，被与斜面垂直的光滑挡板挡着，如图所示．当挡板从图示位置缓缓作逆时针转动至水平位置的过程中，挡板对球的弹力N₁和斜面对球的弹力N₂的变化情况是（　　）

A．N₁增大

B．N₁先减小后增大

C．N₂增大

D．N₂减小