In acting upon such variance, the commission shall make a full investigation and shall only grant a variance upon finding that the following are true:
A. That the granting of the variance will not be in conflict with the spirit and intent of the comprehensive plan and will not effect a change in zoning.
B. That there are exceptional or extraordinary circumstances or conditions applicable to the property or class of use in the district so that a denial of the relief sought will result in:
1. Undue loss in value of the property in a majority of the reasonable uses.
2. Inability to preserve the property rights of the owner.
3. The prevention of reasonable enjoyment of any property right of the owner.
C. The granting of such relief will not be materially detrimental to the public health, safety or welfare, or injurious to the property or improvements of other property or improvement. (Ord. 86, 8-19-1980)