What is the fundamental difference between a MAC address and an IP address?

What is the fundamental difference between a MAC address and an IP address?

• A. A MAC address is used to route packets on the Internet, while IP addresses are used only within a single LAN.
• B. A MAC address is assigned by routers, IP addresses are assigned by end devices.
• C. MAC addresses are 48-bit hardware addresses used on the local link (Layer 2); IP addresses are 32-bit (IPv4) or 128-bit (IPv6) addresses used to route packets (Layer 3).
• D. MAC addresses and IP addresses operate at the same OSI layer.

Answer: (C)