Choose the correct description for the following sudoku solving technique: Locked Pair

A) A 4x4 extension of X-Wing, where four rows and four columns align, permitting eliminations outside intersections.

B) For one digit, two rows that have candidates in exactly the same two columns form a rectangle; all other instances of that digit in those columns can be eliminated.

C) A 5x5 version of the fish pattern, applied to eliminate candidates outside the intersecting region.

D) If two cells within the intersection of a box and a line share the same two candidates, those candidates can be eliminated from other cells in the same house.
