information and secirity please help

4. Assume that Alice sends a message of 640 bits encrypted using DES to Bob and that the 65th bit of the ciphertext is flipped during transmission. How many bits of the plaintext will be garbled at the Bob's side is the message is encrypted under ECB, CBC, 8-bit CFB, 8-bit OFB, and CTR modes, respectively? Explain your answers briefly. (total 10 points, 2 points for each mode)