2. Suppose an error occurs in a block for the following modes of operation: (a) Electronic codebook (ECB), error in plain text block Pi. (b) Cipher block chaining (CBC), error in cipher text block C. (c) S-bit Cipher Feedback (CFB-s), error in plain text block P. (d) Output Feedback (OFB), error in cipher text block C;. but all the other blocks are correct. How many and which block(s) are affected by this on decryption for each of the above scenarios? 2. Suppose an error occurs in a block for the following modes of operation: (a) Electronic codebook (ECB), error in plain text block Pi. (b) Cipher block chaining (CBC), error in cipher text block C. (c) S-bit Cipher Feedback (CFB-s), error in plain text block P. (d) Output Feedback (OFB), error in cipher text block C;. but all the other blocks are correct. How many and which block(s) are affected by this on decryption for each of the above scenarios