问题：

[单选]

R1 has correctly configured EIGRP to filter routes using a route map named question. The configuration that follows shows the entire route map and related configuration. Which of the following is true regarding the filtering action on prefix 10.10.10.0/24 in this case?（）
route - map question deny 10
match ip address 1
route - map question permit 20
match ip address prefix- list fred
!
access - list 1 deny 10.10.10.0 0.0.0.255
ip prefix - list fred permit 10.10.10.0/23 le 25

A . It will be filtered due to the deny action in route map clause 10
B . It will be allowed because of the double negative (two deny references) in clause 10
C . It will be permitted due to matching clause 20's reference to prefix - list freD
D . It will be filtered due to matching the implied deny all route map clause at the end of the route ma