Find All the Discontinuities Of A) 5 and 9
B) 5
C) 9
D) F

Multiple Choice

Find all the discontinuities of $f ( x ) = \left\{ \begin{array} { c c } x ^ { 2 } & \text { if } x \leq 3 \\9 & \text { if } 3 < x < 5 \\2 x + 1 & \text { if } x \geq 5\end{array} \right.$

A) 5 and 9
B) 5
C) 9
D) f is continuous everywhere.