‍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( )。​ A: Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course B: Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course C: Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course D: Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course