根据《UCP600》,下列哪些信用证的类型是正常存在的?
A: REVOCABLE
B: IRREVOCABLE
C: IRREVOCABLE TRANSFERABLE
D: IRREVOCABLE STANDBY
E: IRREVOCABLE TRANS STANDBY
A: REVOCABLE
B: IRREVOCABLE
C: IRREVOCABLE TRANSFERABLE
D: IRREVOCABLE STANDBY
E: IRREVOCABLE TRANS STANDBY
