In convex quadrilateral ABCD, AB = AD = 3, AC = 5, and mסABC = mסADC = 90°. If I is
the center of the circle inscribed in triangle ABD, then what is the length of segment CI ?
(A) 3 (B) 3.2 (C) 4 (D) 4.5 (E) 3.5