下面选项中，用于读取游标所用的关键字是

A.READ

B.GET

C.FETCH

D.CATCH

A.DELIMITER

B.DECLARE

C.SET DELIMITER

D.SET DECLARE

A.DELIMITER

B.DECLARE

C.SET DELIMITER

D.SET DECLARE

A.IF EXISTS

B.HAS EXISTS

C.AS EXISTS

D.IS EXISTS

A.UNIQUE

B.FULLTEXT

C.SPATIAL

D.KEY

A.ALTER

B.CREATE

C.UPDATE

D.INSERT

A.FOREIGN KEY

B.PRIMARY KEY

C.NOT NULL

D.UNIQUE

A.auto enum include

B.switch typedef continue

C.signed union scanf

D.if struct type

A.TRUNCATE

B.DROP

C.DELETE

D.ALTER

A.package

B.interface

C.class

D.implements

A.file.read()

B.file.read(200)

C.file.readline()

D.file.readlines()