concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds.

Given below are two statements:

Statement I: The disk has a total number of $2000$ cylinders.

Statement II: $51200$ bytes is not a valid block size for the disk.

In the light of the above statements, choose the correct answer from the options given below:

Statement I is true.

Number of cylinders is equal to the number of tracks per surface.

Given,

Tracks per surface $=2000$

So, total number of cylinders $=2000$.

Therefore, Statement I is true.

Statement II is false.

Given sector size is:

$512$ bytes

A valid block size should be a multiple of sector size.

Now,

$51200=512\times 100$

So, $51200$ bytes is a valid block size.

But Statement II says that $51200$ bytes is not a valid block size.

Therefore, Statement II is false.