The declaration for a union is identical in form to a structure declaration, with the reserved word union used in place of the reserved word struct.

A. #define
B. typedef
C. set
D. union

A. typedef struct Date DATE;
B. typedef DATE struct Date;
C. #define struct Date DATE
D. #define DATE struct Date

A. struct (PayRecord employee)[10];
B. struct[10] PayRecord employee;
C. struct PayRecord[10] employee;
D. struct PayRecord employee[10];