---

What is the implication of this command?（）
A:The command produces an error because the retention time cannot be reduced. 
B:All historical data is retained but the subsequent flashback data archives are maintained for only three years. 
C:All historical data is purged and the new flashback data archives are maintained for three years. 
D:All historical data older than three years is purged from the flashback archive FLA1. 

---

出自：Oracle认证

显示答案