-Whose notebook is this?        

-It        Jane's. It has her name on it.        [ ]

A. must be

B. might belong to

C. may be

D. could be

甲在公交车上见一残疾人乙欲坐到爱心专座，便抢先入座，遭指责，甲用脚踢他的拐杖，乙摔到。甲的行为（）

A.违反刑法

B.违反社会公德

C.违反民法

D.违反治安管理法