"Livelock" Occurs When One Thread Runs Continuously, While Another Thread

Multiple Choice

"Livelock" occurs when one thread runs continuously, while another thread never does. Which of the following is sufficient to cause livelock?
I Thread one is in an infinite loop
II Thread one possesses a lock and does not unlock it, but thread two requires the lock
III Thread one requires a lock, but thread two possesses the lock

A) I
B) II
C) I and II
D) I and III