What is the effect of the Cisco Application Contra Engine (ACE) command ipv6 fragment
min-mtu 1024?

A.
It configures the interface to fragment packets on connections with MTUs of
1024 or less.

B.
It sets the MTU to 1024 bytes for an IPv6 VLAN interface that accepts
fragmented packets.

C.
It configures the interface to attempt to reassemble only IPv6 fragments that
are at least 1024 bytes.

D.
It configures the interface to attempt to reassemble only IPv6 fragments that
are less than 1024 bytes.

E.
It configures the interface to fragment packets on connections with MTUs of
1024 or greater.

Explanation:
to configure the minimum IPv6 fragment size that the ACE accepts for reassembly, enter
the following command:
host1/C1(config-if)# ipv6 fragment min-mtu 1024
To reset the minimum fragment size to the default value of 1280 bytes, enter the following command:
host1/C1(config-if)# no ipv6 fragment min-mtu
http://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/ace/vA5_1_0/command/reference/ACE_cr/if.html