Hi Guangliang,


The option "b" is acceptable.

b. If an applicant can demonstrate a plan to be multihomed in
     immediate future, it is not a must they are physically multihomed
     at the time of submitting a request

But even then applicant has to provide the details of those ASN with whom they may or may not multhome in future. right?  

Regards,

Aftab A. Siddiqui