In the rectangular coordinate system, points (16, 0) and (– 16, 0) both lie on circle C. What is the maximum possible value of the radius of C ?
Pick one:	A) 2	B) 4	C) 8	D) 16	E) none of the above

Rationale: "d it takes 3 distinct points to define a circle . only 2 are given here . the two points essentially identify a single chord of the circle c . since no other information is provided , however , the radius of the circle can essentially be anything . all this information tell us is that the radius isgreater 16 d"
Answer: D