Suppose that you have formatted your disk with a block size of $4096$ bytes and assume

that we have $10,000$ SMARTPHONE records of fixed length. A block pointer is $10$

bytes long $($P$=10),$ and a record pointer is $6$ bytes long $($Pr$=6).$ Each SMARTPHONE

record has the following fields: Brand $(16$ bytes$),$ Model $(20$ bytes$),$ Color $(10$ bytes$),$

Size $(60$ bytes$),$ Weight $(10$ bytes$),$ Price $(8$ bytes$),$ Year $(4$ bytes$),$ and Remarks $(160$

bytes$).$ The file is ordered by the key field Brand, and we want to construct a primary

index on Brand