Q.2: With the ECB mode, if there is an error in a block of the transmitted ciphertext, only the corresponding plaintext block is affected. However, in the CBC mode, this error propagates. For example, an error in the transmitted C1 obviously corrupts P1 and P2. Suppose that there is a bit error in the source version on the sender's side of P1. Through how many ciphertext blocks on the sender's side will this error propagate? What is the effect at the receiver side? Explain your