CLASS B MASK
11111111.11111111.00000000.00000000
BUT according to question we want three bit subnet then mask
11111111.11111111.11100000.00000000
n general, the number of available hosts on a subnet is $2^{h}−2$, where h is the number of bits used for the host portion of the address. The number of available subnet is $2^{n}$, where n is the number of bits used for the network portion of the address.
Number of subnet=$ 2^{3}$=8
Number of host in each subnet=$2^{13}-2$=8190
none of the ans