The Board of Adjustment may authorize, in specific cases, such variance from any zoning ordinance, code, or regulation that will not be contrary to the public interest, where, owing to special conditions or exceptional situations, a literal interpretation of the zoning ordinance, code, or regulation will result in unnecessary hardship or exceptional practical difficulties to the owner of property so that the spirit of the ordinance, code, or regulation shall be observed and substantial justice done, provided that such relief may be granted without substantial detriment to the public good and without substantially impairing the intent and purpose of any zoning ordinance, code, regulation, or map. Variances shall be subject to terms and conditions to be fixed by the Board; provided, however, that no such variance shall be granted unless the Board finds:
A. That there are physical conditions, fully described in the findings of the Board, applying to the land or buildings for which the variance is sought, which conditions peculiar to such land or building have not resulted from any act of the applicant or any predecessor in title.
B. That, for reasons fully set forth in the findings of the Board, the aforesaid circumstances or conditions are such that the strict application of the provisions of this chapter would deprive the applicant of all reasonable use of such land or buildings, and the variance granted by the Board is the minimum variance that will accomplish this purpose.
C. That the granting of the variance under such conditions as the Board may deem necessary or desirable to apply thereto will be in harmony with the general purpose and intent of this chapter, will not represent a radical departure therefrom, will not be injurious to the neighborhood, will not change the character thereof, and will not be otherwise detrimental to the public welfare.