Question 2: (10 marks) Consider the following code and answer the below questions def bubbleSort(alist): for passnum in range(len(alist)-1,0,-1); for i in range(passnum): if alist[i]>alist[i+1]: temp = alist[i] alist[i] = alist[i+1] alist[i+1] = temp alist = [35, 25, 42, 15, 38, 30,50] bubbleSort(alist) print(alist) a) What are the best, and worst case complexities of the Bubble-Sort algorithm? [2 marks] b) Explain why the complexity of the best case will be as similar as the worst case in the above implementation even if the input list is already ordered. [2 marks] c) List two disadvantage of the bubble-sort algorithm [2 marks] d) Write down the output of this code after 2 iterations. [4 marks]