Which of the Following Statements Is True of a Worm

Multiple Choice

Which of the following statements is true of a worm?

A) It is an independent program that can spread itself without attaching itself to a host program.
B) It floods a network or server with service requests to prevent legitimate users' access to the system.
C) It is usually hidden inside a popular program, but it is not capable of replicating itself.
D) It enables a system designer to bypass the security of a system and sneak back into the system later to access files.