The lengths of two sides of a triangle are 3 cm and 7 cm. What can you conclude about the maximum length of the third side of the triangle?

A
The maximum length of the third side must equal 10 cm.
B
The maximum length of the third side must be greater than 10 cm.
C
The maximum length of the third side must be less than 10 cm.
D
The maximum length of the third side must equal 4 cm.