Choose the correct description for the following sudoku solving technique: Hidden Subset

A) If N cells in a house collectively contain exactly N candidates, those candidates can be eliminated from all other cells in that house.

B) 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.

C) A three-cell formation where the pivot has three candidates and the outer cells share two of them. The third candidate is eliminated from any cell that sees all three.

D) If N digits appear as candidates in only N cells of a house, all other candidates in those cells can be removed.
