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 | Loaded | Last ref. | R | M | |------|--------|-----------|---|---| | 0 | 226 | 280 | 0 | 0 | | 1 | 160 | 265 | 0 | 1 | | 2 | 110 | 270 | 1 | 0 | | 3 | 120 | 285 | 1 | 1 | \nWhich page will NRU replace?