Which of the following possibilities will form a triangle?

Which of the following possibilities will form a triangle?

 a.Side = 15 cm, side = 7 cm, side = 7 cm 

b.Side = 15 cm, side = 7 cm, side = 9 cm

c. Side = 14 cm, side = 6 cm, side = 7 cm 

d.Side = 14 cm, side = 6 cm, side = 8 cm  

The sum of any two sides of a triangle must be greater than the third side.  That's the rule.   

Therefore, only b. can form a triangle.  

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Thank you!