PLEASE HELP!! :(
Asher cut five sets of boards to build triangular tables. Which of the following sets of side lengths would form tables shaped like a right triangle?

27 in, 36 in, 45 in
10 in, 24 in, 26 in
18 in, 22 in, 28 in
20 in, 21 in, 31 in
28 in, 45 in, 53 in