What security advantage does firmware have over software?

A.
It is difficult to modify without physical access.

B.
It requires a smaller memory segment.

C.
It does not need to enforce the security policy.

D.
It is easier to reprogram.

Explanation:
A: Firmware is a type of software that is held in a ROM or EROM chip. It is usually used to allow the computer to communicate with some type of peripheral device. The systems BIOS instructions are also held in firmware on the motherboard. In most situations, firmware cannot be modified unless someone has physical access to the system. This is different from other types of software that may be modified remotely or through logical means