1. Multi-level page tables. Assume a virtual address machine with a 32 bit address. Assume the address is divided into 4 parts a,b,c,d with the first three parts used to index into a three-level page table, and the fourth is used to index into the location on the page. Assume the values for a,b,c,d are 4,6,6,16 respectively resulting in a 64KB sized page. What is the total size in bytes of the page tables for the smallest program, which is a program containing a single page of text and heap, starting at location 0, and a separate page for the stack, starting at location 0xFFFFFFFF and running downwards? Assume all page table entries are 4 bytes each