Write a Python script to perform the below: a) Create a tuple with the following items: 11,22,44,77,88,77,99 To find the first occurrence of item "77" in the tuple. b) Create a Setl with the iterns 10, 20, 30 40, 50 and Set2 with the iterns 40, 50, 60 To find the common elements of Set1 and Set2. c) Create a dictionary Dict with the following items: "Muscat":120, "Nizwa": 1200, "Salalah": 80 To remove the last key-value pair added from dictionary