Each of Xylie, Marie, Angel, and Chloe was given an 18-cm piece of stick. They were instructed to create a triangle. Each cut the stick in their own chosen
lengths as follows: Xylie—6 cm, 6 cm, 6 cm; Marie—4 cm, 5 cm, 9 cm; Angel—7 cm, 5 cm, 6 cm; and Chloe—3 cm, 7 cm, 5 cm. Who among them was not able to make a triangle?