Q Limited uses machine operators and supervisors. Every machine operator makes $100$ units each week. A supervisor may oversee as many as $10$ machine operators and receives $\$550$ per week. Output is $7700$ units per week. What type of cost is the supervisors’ pay, and what is their total pay each week?
- Astepped, $4235$
- Bstepped, $4400$
- Cvariable, $4235$
- Dvariable, $4400$