Which of the following describes a Class A IP address?
A.
The last octet is between 1 and 128 with a subnet mask of 255.0.0.0
B.
The first octet is between 1 and 128 with a subnet mask of 255.255.255.0
C.
The first octet is between 1 and 128 with a subnet mask of 255.0.0.0
D.
The last octet is between 1 and 128 with a subnet mask of 255.255.255.0