(05.05 HC} Let h be a continuous function over the interval [8, 8] with derivative given by h ' consisting of two line segments and two semicircles, as shown in the graph. 5 4 Part A: For what intervals does the graph of n have a positive slope? Negative slope?Justify your answer. {'I 0 points) Part B: For what value[s) ofXdoes n have relative extrema?Justify your answer. [5 points} Part C: For what intervals is the graph of h concave up? Concave down?Justify your answer. {'I 0 points) Part D: For what value(s} ofx does h have a point of inflection?Justify your answer. {5 points)