Which network mask should you use to support 2000 subnets?

Your company is designing its network. The network will use an IPv6 prefix of 2001:DB8:BBCC:0000::/53.
You need to identify an IPv6 addressing scheme that will support 2000 subnets.
Which network mask should you use?

A.
/61

B.
/62

C.
/63

D.
/64



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