A hard disk platter has the following characteristics:

- 520,000 tracks per disk (520,000 tracks per disk's surface)

- 40 sectors per track

- 512 bytes of data per sector

- Avg. seek time = 10 msec

- Rotation rate = 3000 RPM

- Transfer rate = 3.6 Mbps

- Controller overhead = 5.5 msec

- Data can be stored on both the upper and lower surfaces of the disk platter.

A.) How much data can be stored in a single disk platter?

B.) How many disk platters are required to store 250GB of data?

C.) What is the average time to read files from a data block of size 8kb in both the sectors opposite to each other in the same cylinder?

**Use binary conversion (Ex 1Mb = 2 ²⁰ bytes and 1Kb = 1024 bytes)