Your company is adding additional subscriber IP network ranges and requires many-to-one
NAT to be configured on the Cisco ASR 5000 for the subscriber IP network 10.11.23.0/24.
The public IP range is 172.20.21.20 172.20.21.110, and each IP has no more than 100
subscribers.
Which configuration option accomplishes this task?

A.
active-charging service ACS_ACME access-ruledef apn_cisco ip src-address =
10.11.23.0/24 fw-and-nat policy base_1 access-rule priority 1 access-ruledef apn_cisco
permit nat-realm nat_pool1 nat policy nat-required default-nat-realm nat_pool1 rulebase
acme_rulebase fw-and-nat default-policy base_1 context cisco ip pool nat_pool1 range
172.20.21.20 172.20.21.110 napt-users-per-ip-address 100

B.
active-charging service ACS_ACME access-ruledef apn_cisco ip src-address =
10.11.0.0/16 fw-and-nat policy base_1 access-rule priority 1 access-ruledef apn_cisco
permit nat-realm nat_pool1 nat policy nat-required default-nat-realm nat_pool1 rulebase
acme_rulebase fw-and-nat default-policy base_1 context cisco ip pool nat_pool1 range
172.20.21.20 172.20.21.110 napt-users-per-ip-address 1000

C.
active-charging service ACS_ACME access-ruledef apn_cisco ip src-address =
10.11.23.0/24 nat-and-pat policy nat_1 access-rule priority 1 access-ruledef apn_cisco
permit nat-realm nat_pool1 nat policy nat-required default-nat-realm nat_pool1 context cisco
ip pool nat_pool1 range 172.20.21.20 172.20.21.29 napt-users-per-ip-address 100

D.
active-charging service ACS_ACME access-ruledef apn_cisco ip src-address =
10.11.23.0/24 fw-and-nat policy base_1 access-rule priority 1 access-ruledef apn_cisco
permit nat-realm nat_pool1 nat policy nat-required default-nat-realm nat_pool1 rulebase
acme_rulebase fw-and-nat default-policy base_1 context cisco ip pool nat_pool1 range
172.20.21.20 172.20.21.29 napt-users-per-ip-address 100