A self-employed taxpayer may be eligible to deduct amounts paid for medical insurance for themselves and for their families, as long as neither they nor their spouse were eligible for employer-sponsored health insurance. Where is this deduction claimed?

a)An adjustment to income on Schedule 1.

b)A business expense on Schedule C.

c)A nonrefundable tax credit on Schedule 3.

d)A refundable tax credit on Schedule 3.