对于学生信息表：student(sno, sname, sex, age, dept)，能够得到年龄在20岁于22岁之间的学生的姓名和学号的语句是
A．SELECT * FROM student WHERE age BETWEEN 20 AND 22
B．SELECT sname, sno FROM student WHERE age BETWEEN 20 AND 22
C．SELECT sname,sno FROM student WHERE age＞＝20
D．SELECT shame,sno FROM student WHERE age＜＝22