1095-A interview asks which business, I have 2 self-employed businesses, refund varies

I have marketplace medical plan for myself and my family, am self-employed with two businesses.  Wife is employed with W-2 and withholdings.  The interview asks which of those 3 income streams the medical plan should be attributed to.  Each of the 3 has different income and expense amounts, so choosing one provides a different tax/refund amount than choosing another.  There appears to be no guidance on what is the correct way to attribute the 1095-A in this case.  The interview only allows choosing one of the income streams.  Any insight is greatly appreciated.