Which of the following is a possible length for side AB of triangle ABC if AC = 3 and BC = 9?
I. 6
II. 9 √3
III. 11.5  Choices.
A) I only
B) II only
C) III only
D) II and III
E) I, II, and III
(9-3) &lt; AB &lt; (9+3)   The answer is III only.
<result>C</result>
Which of the following is a possible length for side AB of triangle ABC if AC = 3 and BC = 9?
I. 6
II. 9 √3
III. 11.5