Please help with question 8. Thank you

Delete 6) According to the discussion on Address Spaces on the textbook, which of the following statements is NOT true? A. Each thread has its own address space; B. Each process has its own address space; C. An address space refers to the set of addresses that a process or a thread can use; D. If an address can be represented in 64 bits, its corresponding address space is 2 bytes 7) The optimal page replacement algorithm is A. implemented in most virtual memory management systems. B. used only in the fifth generation computers. C, used mostly for evaluating other page replacement algorithms. D. a practical algorithm for realizing virtual memory management. 8) Given a logical address 0x464A (in hexadecimal) with a page size of 256 bytes, what is the page number? A. Ox4A B. Ox4A6 C. Ox464 D. 0x46 E. 0x004A F. Your answer: 9) The memory manager is not responsible for A allocating CPU registers to processes B. releasing memory space when it is no longer in use C. keeping track of which parts of memory space are in use D. allocating memory space to processes 10) Please use the page table of Fig. 3-9 on page 197 to determine which of the physical addresses is corresponding to the virtual address 16K?! A. 4K B. 4K + 1 C. 16K 1. 16K + 1