Which of the following must be true of the above triangle ABC?
I. AC + AB < BC
II. AC < AB < BC
III. AC + AB = BC
I only
II only
I and III only
II and III only
I, II, and III
I. AC + AB < BC
II. AC < AB < BC
III. AC + AB = BC
I only
II only
I and III only
II and III only
I, II, and III