Which of the following is one of the key features found in a worm but not seen in a virus?

A.
The payload is very small, usually below 800 bytes.

B.
It is self replicating without need for user intervention.

C.
It does not have the ability to propagate on its own.

D.
All of them cannot be detected by virus scanners.

Explanation:
A worm is similar to a virus by its design, and is considered to be a sub-class of a virus. Worms spread from computer to computer, but unlike a virus, it has the capability to travel without any help from a person. A worm takes advantage of file or information transport features on your system, which allows it to travel unaided.