问题：

[单选] What is true about a Pre-Block ACLconfigured when setting up your sensor toperform IP Blocking？（）

A .  The Pre-Block ACL is overwritten when a blockingaction is initiatied by the sensor
B .  The blocking ACL entries generated by the sensor override the Pre-Block ACL entries
C .  The Pre-Block ACL entries override the blocking ACL entries generated by the sensor
D .  The Pre-Block ACL is replaced by the Post-Block ACL when a blocking actionis initiated bythe sensor
E .  You can not configure a Pre-Block ACL when configuring IP Blockingon your sensor