d. Given the data of the following table you are asked to implement Brute Force approach to identify the optimum combination of items resulting in the highest possible value for a knapsack of weight capacity of 15 units. Show the proceedings of each combination considered. Items Item 1 Item 2 Item 3 Item 4 Value 12 42 C 35 30 Weight e. Reflect the mathematical operation seen below on a binary tree a-b -) xd 6 7 5 2 (2 marks)