Cipher block chaining (CBC) mode has the property that it recovers from errors in ciphertext blocks. Show that if an error occurs in the transmission of a block C;, but all the other blocks are...

Please explain the reasoning behind the blocks being affected thank you.

Extracted text: Cipher block chaining (CBC) mode has the property that it recovers from errors in ciphertext blocks. Show that if an error occurs in the transmission of a block C;, but all the other blocks are transmitted correctly, then this affects only two blocks for decryption. Which two blocks?