假设学生情况表中的生日字段为birthday,数据类型为日期时间型,则查找年龄在18到20之间的学生信息,查找条件表达式正确的是:
A.
2020-year ( [birthday] ) >=18 and 2020-year ( [birthday] ) <=20
B.
2020-year ( [birthday] ) >=18 or 2020-year ( [birthday] ) <=20
C.
year( now( ) )- year ( [birthday] ) >=18 and year( now( ) )- year ( [birthday] ) <=20
D.
year( now( ) )- year ( [birthday] ) >=18 or year( now( ) )- year ( [birthday] ) <=20