What does this mean?

Denise found out that she has been a victim of a Bluejacking. What does this mean?

A.
Someone sent an unsolicited message through her PDA.

B.
Someone captured her ciphertext data.

C.
Someone spoofed a message, which caused a DoS.

D.
Someone social engineered her.

Explanation:
Bluejacking is when someone sends an unsolicited message to a device
that is Bluetooth enabled. Bluejackers look for a receiving device (phone, PDA,
laptop) and then send a message to it. Many times someone is trying to send someone
else their business card, which will be added to the victims contact list in their
address book.