The diagram illustrates the way the length of a spring alters when a load of $10\,\text{N}$ is hung from it. The $10\,\text{N}$ load is then changed to a $20\,\text{N}$ load. What is the spring's new length?
- A$6.0\,\text{cm}$
- B$11\,\text{cm}$
- C$14\,\text{cm}$
- D$16\,\text{cm}$