3. Consider the page table for a system with 12b logical and physical addresses and 256B peges. Page Table The list of free page frames is D,E,F (that is, D is at the head of the list, E is second, and F is last). Convert the following logical addresses to their equivalent physical addresses in bexadecimal (remember that every hexadecimal character is encoded in four bits). All numbers are given in hexadecimal. [2.5 credits] a) 02CF; b) 0121; c) 0400