409A network engineer must configure two new subnets using the address block 10.70. 128.0/19 to meet these requirements: The first subnet must support 24 hosts. The second subnet must support 472 hosts. Both subnets must use the longest subnet mask possible from the address block.Which two configurations must be used to configure the new subnets and meet a requirement to use the first available address in each subnet for the router interfaces? (Choose two.)