The SCOTT user has an index on the ITEM_DESC column of the ITEM table. As part of the year- ending task, SCOTT updates the ITEM_DESC column for most of the rows in the ITEM table. How does this change to the table affect the index?
A.
An update in a leaf row takes place.
B.
The index becomes invalid after the update.
C.
The leaf block containing the row to be updated is marked as invalid.
D.
A row in the leaf block of the index for the key value is deleted and inserted.