A. 19 (3 from the warehouse range and 16 from a separate Class C address)
B. 19 (3 from the warehouse block, 15 from a separate Class C block and 1 from the IP WAN block)
C. 20 (4 from the warehouse range,15 from a separate Class C block and 1 from the IP WAN block)
D. 16 (3 from the warehouse range and 13 from a separate Class C address)