The essential content(s) in each entry of a page table is / are
Virtual page number
Page frame number
Both virtual page number and page frame number
Access right information
Notice It is Page frame number. It is not just Frame Number because in multiple level page table using Frame Number may be little bit confusing.
Refer -> https://gateoverflow.in/490/gate2008-67
It is (B).
The page table contains the page frame number essentially.