Cathy wonders if her teacher _______ to her house. If she _______, what will she say to her parents?

A．comes, comes

B．will come, will come

C．comes, will come

D．will come, comes

电缆穿越建筑物、构筑物、道路、易受机械损伤的场所及引出地面从2.5m高度至地下0.2m处，必须加设防护套管。( )