b) Given the initial memory allocation as shown below. Allocate the memory space to the processes P1 (6KB), P2 (7KB) and P3 (18KB) that arrives in the given order. OS 13 K 25K 7K 20K 21K 15K 22K Hole Occupied for Process Draw a diagram to show the memory allocation for each of the following method: i) First-fit algorithm ii) Best-fit algorithm iii) Worst-fit algorithm (2 marks) (2 marks) (2 marks)