8. Each of Angel, Anne, Luis and Sam was given a 15-inch piece of stick. They were instructed to create a triangle. Each cut the stick in their own chosen lengths as follows: Angel—5 in, 5 in, 5 in; Anne-3 in, 5 in, 7 in; Luis-6 in, 4 in, 5 in; and Sam-3 in, 4 in, 8 in. Who among them was not able to form a triangle?
A. Angel
B. Anne
C. Luis
D. Sam ​