2 3 4 + 5 3 5 thirds less than 2 3 4 The sum of 2 3 4 and 5 thirds The product of 2 3 4 and 5 thirds

The lengths of two sides of a triangle are 9 and 15. what can be said about the length of the third side? a. it must be greater than or equal to 6 and less than 24. b. it must be greater than or equal to 6 and at most 24. c. it must be greater than 6 and less than 24. d. it must be greater than 6 and at most 24.