In a certain computer system, the logical address is represented by 48 bits. The page size is 1 MB (2^20 bytes). The system's physical address is represented by 32 bits. Each page table entry is 4 bytes. a. Assuming a single-level conventional page table, how many bits are we going to have in the "page number" field? In the offset field? What is the total size of the page table? Show your work. b. Assuming a two-level page table where each inner page table is also 1 MB, how many bits do we have in the "p1" field? in the "p2" field? in the offset field? What is the total size of all the page tables in this system? Show your work