Answer: Sell before assembly, the company will be better off by $1 per unit.
Explanation:
To solve the above question, we need to calculate the incremental profit or loss first. This will be:
= After assembling sales value - Unassembled unit sales value - Coat if further processing
= $87 - $62 - $26
= -$1
Since there is an incremental loss of $1, then the correct answer is "Sell before assembly, the company will be better off by $1 per unit".