Section 2: Search Methods Consider the A* search problem shown here. The path cost g(x) is the actual distance from the start state S to an intermediate state, while the heuristic h(x) is the estimated distance from an intermediate state to the goal state G. Answer the given questions. [2 points each, total 10 points] Distance (S ? A) = 10 Distance (S -> B)-5 Distance (S ? C)-8 Distance (S > D)-7 Distance (S -> G)-25 Estimate (A -> G)-11 Estimate (B -> G)-14 Estimate (C- G)-12 Estimate (D -> G)-15 Estimate (G -> G)-0 [Obvious] 6. The function f(x) used to trace the path from start to goal in A* is a) f(x)=g(x)+h(x) b) fx)-g(x)-h(x) d) None of these