Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors pertrack. 512 bytes of data are stores in a bit serial manner ina sector. The capacity of the disk pack and the numberof bits required to specify a particular sector in the disk are respectively

A

256 Mbyte, 19 bits

B

256 Mbyte, 28 bits

C

512 Mbyte, 20 bits

D

64 Gbyte, 28 bits