B. False
=================
Apply the Triangle Inequality Theorem.
According to the theorem, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
In this case, the sum of the length of the two sides is 3 + 3 = 6, which is less than 9, the length of the third side.
Therefore, it is not possible to build a triangle with these side lengths.