which reason could a BGP-speaking device in autonomous system 65534 be prevented from installing the given route in its BGP table?

Refer to the exhibit.

For which reason could a BGP-speaking device in autonomous system 65534 be prevented from
installing the given route in its BGP table?

A.
The AS number of the BGP is specified in the given AS_PATH.

B.
The origin of the given route is unknown.

C.
BGP is designed only for publicly routed addresses.

D.
The AS_PATH for the specified prefix exceeds the maximum number of ASs allowed.

E.
BGP does not allow the AS number 65535.