How does the steady state theory of the universe differ from the Big Bang theory?

Question

A.
The steady state theory proposes that dark matter does not exist; the Big Bang theory proposes that it does.
B.
The steady state theory puts the age of the universe at 4 million years; the Big Bang theory puts it at 5 million.
C.
The "steady state" universe may not have had a beginning; the "Big Bang" universe definitely did.
D.
The steady state theory claims that faster-than-light travel is possible; the Big Bang theory claims it isn't.