A large number of consecutive IP address are available starting at 192.168.0.0. Suppose that five universities, HU, BU, CU, DU and PU has requirement of 4000, 2000, 500, 1000 and 7000 IP address blocks respectively. There are large number of consecutive IP address available with starting of 192.168.0.0. What will be the valid first and last IP address assigned for BU.
1. 192.168.12.0/21 → 192.168.61.255/21
2. 192.168.48.0/21 → 192.168.55.255/21
3. Either (a) or (b)
4. Neither (a) nor (b)