A wire with length $1.0\,\text{m}$ and cross-sectional area $0.40\,\text{mm}^2$ has a resistance of $2.0\,\Omega$. What resistance would a $0.50\,\text{m}$ length of wire have, if it is made from the same material and has a cross-sectional area of $0.80\,\text{mm}^2$?
- A$0.5\,\Omega$
- B$1.0\,\Omega$
- C$4.0\,\Omega$
- D$8.0\,\Omega$