Task: Question Answering
Input (English): What is a replay attack?
(A)When the attacker replies to a message sent to it by the system (B)An attack that continuously repeats, probing for a weakness (C)An attack that uses the system's own messages and so cannot be defended against (D)The attacker resends a captured message, and the site accept its and responds in the attacker's favor
Output (English): D