Based on these segment lengths, which group of segments can form a triangle?

A.
3, 10, 14
B.
8, 7, 13
C.
3, 2, 5
D.
20, 7, 13

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.