Here, $$Valid$$ means that a translation is valid, $$Writeable$$ means that the page is writeable, $$User$$ means that the page is accessible by the User $($rather than only by the Kernel$).$ a$)(8$ points$)$ What is the page size and the physical memory size supported by this scheme? What is the total maximum size of a page table $($in bytes$)$ for this scheme? Note: the phrase $$page table$$ in this question means the multi$-$level data structure that maps virtual addresses to physical addresses.