对Course表，使用课程号，课程名，学分，及额外增加的iXueshi字段创建视图，学时为学分乘以16，正确的SQL语句是()。得分/总分A.CreateProcShiTuAsSelectCno,Cname,Ccredit,Ccredit*16asiXueshifromCourseB.CreateIndexShiTuAsSelectCno,Cname,Ccredit,Ccredit*16asiXueshifromCourseC.CreateViewShiTuAsSelectCno,Cname,Ccredit,Ccredit*16asiXueshifromCourseD.CreateViewShiTuAsSelectCno,Cname,Ccredit,Ccredit*16fromCourse