What Statement Best Describes the Way to Prevent a Key

Multiple Choice

What statement best describes the way to prevent a key generating algorithm from create the same keys, weak keys, or a batch of keys that have a lot in common?

A) A different algorithm should be used each time to confuse the cryptanalyst
B) The algorithm should be salted with a one-time random value before each key is made
C) Only one time keys should be used, it is impossible to prevent a computer from repeating a process
D) Keys should always be created offline, by a dedicated system