4. Given the following: configuration with jobs arriving in order (Job A, B, and C) and with blocks shown in order from low-order memory to high-order memory Job List: Job Number ob A ob B Job C Memory Requested 990K 275K 60K Memory Block List: Memory Block Block 1 Block 2 Block 3 Memory Block Size 900K 960K 300K a. Use the first-fit algorithm to indicate which memory blocks are allocated to b. Use the best-fit algorithm to indicate which memory blocks are allocated to c. Calculate the amount of internal fragmentation in Block 1 using the first-ft each of the arriving jobs each of the arriving jobs. algorithm