Consider a swapping system in which memory consists of the following hole sizes in memory order: 10 KB, 4 KB, 20 KB, 18 KB, 7 KB, 9 KB, 12 KB, and 15 KB. Which hole is taken for successive segment requests of (a) 12 KB (b) 10 KB (c) 9 KB for first fit? Now repeat the question for best fit, worst fit, and next fit.