An organization is assigned a Class-C network 200.120.80.0 and wants to form subnets for its threedepartments: D1 (60hosts), D2 (90hosts), and D3 (90hosts). Describe a possible arrangement of subnets (i. e., give the network address and the subnet mask of each subnet) to make this possible. Note that a department may be assigned multiple subnets; subnets may have different sizes and they shall not overlap.