Suppose that the Sailor table has $500$ tuples $($or records$)$ stored in $50$ disk blocks and the Reserve table has $5,000$ tuples $($or records$)$ stored in $500$ disk blocks.

Let S be Sailor and let R be Reserve.

The following information is provided for access paths:

$7$ buffer caches $($pages$)$ are available.

$$ The Sailor table has the secondary index on sid with index level $=1.$

$$ The Reserve table has the secondary index on sid with index level $=2.$

$$ Each Sailor tuple matches with exactly $10$ Reserve tuples.

Consider the following block nested loop join: S $$ R

Which one is the IO cost for the join operation $?$

Group of answer choices

$5,500$

$6,050$

$5,050$

$10,500$

None of the above