查询选修了课程号为'C2'的学生号和姓名，若用下列SQL的SELECT语句表达时，哪一个是错误的

A．SELECT
S．S#，SNAME FROM S WHERE
S．S#=(SELECT S
C．S# FROM SC WHERE C#=‘C2’)
B．SELECT
S．S#，SNAME FROM S，SCWHERE
S．S#=S
C．S#AND C#=‘C2’
C．SELECT
S．S#，SNAME FROM S，
D．SELECT
S．S#，SNAME FROM S