单选题：In the implementation of demand paging, the physical memory is b

In the implementation of demand paging, the physical memory is broken into fixed size blocks of frames of size x and the backing storage is divided into fixed size blocks of size y. What is relation between the two sizes?@[D](1)
A. y = 2x
B. x = 2y
C. y = nx, where n is a positive integer
D. x = y




A.y = 2x
B.x = 2y
C.y = nx, where n is a positive integer
D.x = y


答案：D