下列声明游标的语法格式中,正确的是( ) 。
ADECLAREcursor_nameCURSORFORselect_statement
BCURSOR cursor_name FOR select_statement
CDECLAREcursor_nameCURSOROFselect_statement
DCURSORcursor_nameOFselect_statement
ADECLAREcursor_nameCURSORFORselect_statement
BCURSOR cursor_name FOR select_statement
CDECLAREcursor_nameCURSOROFselect_statement
DCURSORcursor_nameOFselect_statement