A computer virus hoax is a message warning the recipient of non-existent computer virus. The message is usually a chain e-mail that tells the recipient to forward it to every one they know.
Which of the following is NOT a symptom of virus hoax message?
A . The message prompts the end user to forward it to his / her e-mail contact list and gain monetary benefits in doing so
B . The message from a known email id is caught by SPAM filters due to change of filter settings
C . The message warns to delete certain files if the user does not take appropriate action
D . The message prompts the user to install Anti-Virus