<p>Points P, Q, and R lie in a plane. If the distance between P and Q is 5 and the distance between Q and R is 2, which of the following could be the distance between P and R?</p>

<p>I. 3

II. 5

III. 7</p>

<p>A) I only

B) II only

C) III only

D) I and III only

E) I, II, and III</p>

<p>I don't know how to go about solving this problem. Can someone help me? The correct answer is E.</p>