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The correct answer is A.

OBJ-2.4: The simplest way to scan multiple subnets adjacent to each other is to use the -Pn tells the command to conduct a host-only scan of every IP in this target space without using ping. Using the dash (-) in the IP address means to scan “this network through this network.” So, 10.0.0-3.0 will scan every IP from 10.0.0.0 through 10.0.3.255.

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