24. Apply FIFO, LRU and OPTIMAL page replacement algorithms for following page reference string $\mathbf {3, 4, 2, 3, 4, 3, 4, 5, 7, 6, 4, 3, 2, 3, 4,5 , 4}$. Assume 3 frames and all'frames are initially empty. 'Show all the steps. CS. JG.049