O'Brien Company manufactures and sells one product. The following information pertains to each of the company's first three years of operations:

Variable costs per unit:

Manufacturing:

Direct materials $$26$

Direct labor $ $$14$

Variable manufacturing overhead $$4$

Variable selling and administrative $$4$

Fixed costs per year:

Fixed manufacturing overhead $$530,000$

Fixed selling and administrative expenses $$140,000$

During its first year of operations, O'Brien produced $91,000$ units and sold $71,000$ units. During its second year of operations, it produced $77,000$ units and sold $92,000$ units. In its third year, O'Brien produced $86,000$ units and sold $81,000$ units. The selling price of the company's product is $$78$ per unit.

$3.$ Assume the company uses absorption costing and a FIFO inventory flow assumption $($FIFO means first$-$in first$-$out. In other words, it assumes that the oldest units in inventory are sold first$)$:

a$.$ Compute the unit product cost for Year $1,$ Year $2,$ and Year $3.$

b$.$ Prepare an income statement for Year $1,$ Year $2,$ and Year $3.$