A manufacturer worked out the production cost for the year as $57\,000. It was discovered that $2000 spent on lighting and heating had been left out of the financial statements. $75\%$ of lighting and heating is assigned to the factory, and $25\%$ of lighting and heating is assigned to the offices. What was the correct cost of production?
- A$55\,500$
- B$56\,500$
- C$57\,500$
- D$58\,500$