A national retail chain needs to design an IP addressing scheme to support a nationwide network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the following subnet masks will support an appropriate addressing scheme?（）

A.any-to-many communication model
B.delivery of packets to the group interface that is closest to the sending device
C.one-to-many communication model
D.the same address for multiple devices in the group
E.one-to-nearest communication model
F.a unique IPV6 address for each device in the group

A.2001：0000：130F：：099a：：12a
B.2002：7654：A1AD：61：81AF：CCC1
C.FEC0：ABCD：WXYZ：0067：：2A4
D.2004：1：25A4：886F：：1

A.172.16.0.0/16
B.172.16.0.0/20
C.172.16.0.0/24
D.172.32.0.0/16
E.172.32.0.0/17
F.172.64.0.0/16