A spring that has not been extended measures $2.0\,\text{cm}$ in length. It is then pulled, but only up to its limit of proportionality, by a tensile force of $1.5\,\text{N}$. The elastic potential energy stored in the spring becomes $0.045\,\text{J}$. Determine the spring’s length when stretched.
- A$3.0\,\text{cm}$
- B$5.0\,\text{cm}$
- C$6.0\,\text{cm}$
- D$8.0\,\text{cm}$