Factory labor cost requires distinguishing regular vs. overtime hours, which is missing Steps:

• Basic rate is $10/hour for regular hours; overtime at$15/hour (1.5x basic).
• Total hours worked = 1500, but no breakdown of regular vs. overtime hours provided.
• Basic pay = regular hours × $10; overtime pay = overtime hours ×$15.
• Bonus = 10% of basic pay since actual production (15,000 units) > target (12,000 units).
• Total cost = (regular × $10) + (overtime ×$15) + 0.1 × (regular × $10), but cannot compute without overtime hours.

Why B is correct:

• Not enough information to calculate exact cost; B may represent an incomplete basic pay estimate (e.g., assuming partial hours), but full computation impossible.

Why the others are wrong:

• A assumes no overtime and adds bonus to full 1500 hours ($15,000 +$1,500), ignoring missing overtime data.
• C and D likely include assumed overtime or misapplied bonus, exceeding minimum possible cost without overtime details.

Not enough information. Final answer: Not enough information.