—Mr Harry, we want to hear what you think about the reform being carried out in our school.

—OK, I        to that.

A．am coming

B．have come

C．came

D．had come

如图所示，物体m与斜面体M一起静止在水平面上．若将斜面的倾角θ稍微增大一些，而物体m仍静止在斜面上，则（　　）

A．斜面体对物体m的支持力变小

B．斜面体对物体m的摩擦力变小

C．水平面与斜面体间的摩擦力变大

D．水平面与斜面体间的摩擦力变小