The table presents the information available to a company’s managers from one week of business activity: number of employees $=100$, average wage $=\$900$, value of output $=\$100\,000$, rent $=\$10\,000$, raw materials $=\$20\,000$. If there are no other costs, what is the amount of the fixed costs?
- A$\$300$
- B$\$10\,000$
- C$\$20\,000$
- D$\$30\,000$