Please only select ONE of the following multiple choices as the correct answer. In a sentence or two, justify your answer for my understanding. Thanks.

We consider the one-time pad with messages and keystreams both binary sequences. Suppose that the system is used erroneously, so that two messages have been encrypted using the same key. What information can an adversary that hears the two ciphertexts deduce about the plaintexts? The adversary can deduce the frequency of 1s and Os in both plaintexts The adversary cannot gain any additional information The adversary can identify exactly in which bit positions the two messages differ The adversary can completely break the two messages