If $f ( x ) = \left\{ \begin{array} { l l } \int _ { 0 } ^ { x } ( 5 + | 1 - t | ) d t , & x > 2 \\ 5 x + 1 , & x \leq 2 \end{array} \right.$, then\\
(1) $f ( x )$ is not continuous at $x = 2$\\
(2) $f ( x )$ is everywhere differentiable\\
(3) $f ( x )$ is continuous but not differentiable at $x = 2$\\
(4) $f ( x )$ is not differentiable at $x = 1$