CBC is described as$------------$

A block cipher that has no chaining so there's not enough randomness to encrypt large amounts of data.It is used in challenge response and encrypting PIN numbers at an ATM

A block cipher where ciphertext from a previously encrypted block is used to encrypt the next block of data thus it provides more randomness and patterns are not that much of a concern

A stream cipher where the previous cphertext is used to encrypt the next block of data and often is used to encrypt individual characters

a stream cipher where the values from the previous keystream are used to encrypt the next block of data and is often used to encrpt satellite communications.