Answer Happy

Please give answer to this operating system questionASAP. its really urgent.
A computer has four page frames. The time of loading, time of last access, and the R and M bits for each page are as shown below (the times are in clock ticks): Page 0 1 2 3 Loaded 126 230 140 110 Last ref. 280 265 270 285 RM 10 0 0 1 1 0 1 (a) Which page will NRU replace? (b) Which page will FIFO replace? (c) Which page will LRU replace? (d) Which page will second chance replace? *Explain your answer. Do not just put the values. you can upload pictures of your answer if needed.