offices require?

Acme Nutrition manufactures a wide variety of vitamin supplements. It has a single manufacturing
facility with 3 regional warehouses and 16 district sales offices. Currently the manufacturing facility requires
210 IP addresses; each warehouse requires 51 IP addresses; each district sales office requires 11 IP
addresses; and the IP WAN requires 38 IP addresses.
if Acme Nutrition plans for 20 percent growth in facilities, how many Class C subnets will the district sales
offices require?

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)