Resistance, Resistivity, and Ohm's Law Practice Test

A metal wire has resistance $R=3.0,\Omega$ at room temperature. Resistivity $\rho$ is a property of the metal; resistance depends on $\rho$, length, and area. The wire is uniformly stretched to twice its length while its volume stays constant. Which statement is correct about its resistance?

A metal wire obeys Ohm’s law. Its resistivity is $\rho$, and its resistance is $R=\rho L/A$ for length $L$ and area $A$. With a fixed $9.0\ \text{V}$ source across the wire, which change decreases the current through the wire?