(A) Nothing herein contained shall be construed to give or grant to the Board the power or authority to alter or change the zoning ordinance or the zoning map. No member of the Board shall hear or vote upon an appeal or variance in which he is directly or indirectly interested in a personal or financial way.
(B) The Board shall find that the variance is the minimum variance that will make possible the reasonable use of the land, building or structure.
('69 Code, § 7-28.05)