0.13/1 pt Answer the following questions about the graph of 'f" based on the graph of 'f above. A) State the 'x'-values over which 'f" is positive. (-,-1) U (-1,0) U (2,00) B) State the x-values over which f" is negative. (0,2) X X C) State the x-values over which 'f" is zero. 0,2 D) State the x-values over which 'f" is undefined. {-1}