Answer:
Sell them in their current state
Explanation:
Ignore the cost already incurred ($111) since it is a sunk cost (already spent) and should not affect future decision.
1) The incremental cost of completing each unit = material cost ($14) + direct labour cost ($15) + variable overhead cost ($9) = $38 (allocated fixed cost was not included since it is a non-cash item)
With a sale price of $124, the profit per unit = $124 - $38 = $89.
2) Whereas, selling the partially completed unit will earn $107 (without any additional cost).
Since selling the partially completed unit earns higher incremental value than completing manufacture before sale, selling is the optimal decision.