单选题On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup.Which flashback feature would you use？（）A Flashback DropB Flashback TableC Flashback DatabaseD Flashback Version QueryE Flashback Transaction Query
单选题
On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup.Which flashback feature would you use？（）
A
Flashback Drop
B
Flashback Table
C
Flashback Database
D
Flashback Version Query
E
Flashback Transaction Query
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