Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

• 0.0.0.0, 0.0.0.1, 0.0.1.1
• 255.255.255.0, 255.255.0.0, 255.0.0.0
• 255.0.0.0, 255.255.0.0, 255.255.255.0
• 255.255.0.0, 255.255.255.0, 255.255.255.255
• None of the above