“ Bona fide lease or tenancy.— For purposes of this section, a lease or tenancy shall be considered bona fide only if— (1) the mortgagor or the child, spouse, or parent of the mortgagor under the contract is not the tenant; (2) the lease or tenancy was the result of an arms-length transaction; and (3) the lease or tenancy requires the receipt of rent that is not substantially less than fair market rent for the property or the unit’s rent is reduced or subsidized due to a Federal, State, or local subsidy. ”