已知4个关系： S(sno,sname,sex,age,dept,special) C(cno,cname,credit,dept,precno,tno) T(tno,tname,sex,tspecial) SC(sno,cno,grade) 检索“通信”和“计算机”专业情况的语句是( )。

A．SELECT* FROM S WHERE special=’通信’ OR special=’计算机’

B．SELECT* PROM S WHERE special=’通信’ AND special=’计算机’

C．SELECT* FROMT WHERE special=’通信’ OR special=’计算机’

D．SELECT* FROM T WHERE special=’通信’ AND special=’计算机’