Which set of measures can be the lengths of sides of a triangle?
A. $\ \ 4 \ cm, 6 \ cm, 12 \ cm$
B. $\ \ 2 \ cm, 2 \ cm, 5 \ cm$
C. $\ \ 1 \ cm,2 \ cm,3 \ cm$
D. $\ \ 3 \ cm, 5 \ cm, 7 \ cm$