A spring measures $9.0\,\text{cm}$ in length when a $200\,\text{g}$ mass is attached to it. The graph of extension against mass for the spring is given. The $200\,\text{g}$ mass is changed to a $100\,\text{g}$ mass. What would the spring’s new length be?
- A$7.0\,\text{cm}$
- B$8.0\,\text{cm}$
- C$9.0\,\text{cm}$
- D$10\,\text{cm}$