Find All the Discontinuities Of A) 0 and 3
B) 3
C) 0
D) F

Multiple Choice

Find all the discontinuities of $f ( x ) = \left\{ \begin{array} { c c } \sqrt [ 3 ] { x - 1 } & \text { if } x \leq 0 \\- 1 & \text { if } 0 < x < 3 \\2 x - 7 & \text { if } x \geq 3\end{array} \right.$

A) 0 and 3
B) 3
C) 0
D) f is continuous everywhere.