单选题：Contiguous allocation of files is not good for files that change
Contiguous allocation of files is not good for files that change in size because:@[B](1)
A. the files cannot be made smaller.
B. the files need to be moved around when they grow in size.
C. random access time is too slow.
D. it is slow to move backwards in the file.
A.the files cannot be made smaller.
B.the files need to be moved around when they grow in size.
C.random access time is too slow.
D.it is slow to move backwards in the file.
答案：B
A. the files cannot be made smaller.
B. the files need to be moved around when they grow in size.
C. random access time is too slow.
D. it is slow to move backwards in the file.
A.the files cannot be made smaller.
B.the files need to be moved around when they grow in size.
C.random access time is too slow.
D.it is slow to move backwards in the file.
答案：B