Two Calculus I questions: 1) all the boxes are the same. Which of those graphs correspond to the problem?

Consider the following function.f(x) = x4 - 8x3 + 18x2 + 8(a) Make a sign diagram for the first derivative.---Select------Select------Select------Select------Select---Xf'(x) >0X=f' (x) <0f ' (x) =0(b) Make a sign diagram for the second derivative.undefined---Select------Select------Select------Select------Select---X =X =(c) Sketch the graph, showing all relative extreme points and inflection points.y401IPIPIP20/IP-4- X-22- X4-4-224-20-20O-40-O-40