A claimant may not claim the credit under par. (b) for any tuition amounts that the claimant paid or incurred for a family member of the claimant or for a family member of a managing employee unless all of the following apply: a.
(a)#
The family member was employed an average of at least 20 hours per week as an employee of the claimant, or the claimant’s business, during the one-year period prior to commencing participation in the education program in connection with which the claimant claims a credit under par. (b).
(b)#
The family member is enrolled in a course of instruction that is substantially related to the claimant’s business.