These figures refer to a manufacturing business for the year ended 30 September 2025: [table shown with prime cost $355000, factory overheads $114850, total production cost of finished goods $475000, inventory of raw materials at 30 September 2025 $4200, inventory of finished products at 30 September 2025 $1100]. Work in progress at 30 September 2024 stood at $9990. What was the business's total inventory at 30 September 2025?
- A$4840
- B$5150
- C$5300
- D$10140