Question $6(1$ point$)$

Let f$($x$)=|$x$+2|.$ Which of the following statements about f are true?

Show your justifications clearly.

I. f is continuous at x$=-2$

II$.$ f is differentiable at x$=-2$

III. f has a corner at x$=-2$

a I and II only

b III only

c I and III only

d I only

e II only