Operating Systems·Virtual Memory·FoundationA page fault is not an errorA program accesses memory and a page fault occurs.What has happened?AThe page is not in physical memory yet, so the kernel fetches it and the access continuesBThe program accessed memory it does not own, and will be terminatedCPhysical memory has filled up, so the program has to wait for some of it to be freedDThe page table is corrupt and has to be rebuiltCheck answer