Which Argument(s) Present(s) the Best Case(s) for Using the Runnable

Multiple Choice

Which argument(s) present(s) the best case(s) for using the Runnable interface rather than extending the Thread class?
I Thread sub-classes are harder to write
II Runnable objects can be passed into thread pools
III Less time is wasted in creating and destroying thread objects

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