-São dados os lados de triângulos abaixo , qual deles é o correto ?

a)7,0 cm; 6,0 cm e 1,0 cm

b) 2,0 cm; 5,0 cm e 1,0 cm

c) 6,0 cm; 6,0 cm e 6,0 cm

d) 9,0 cm; 6,0 cm e 2,0 cm

(Me ajudem por favor ;-;)