The diagram illustrates three wires, P, Q and R. Each one is made from the same metal. Which sequence shows the wires arranged by resistance, from the smallest to the largest?
- AP $\rightarrow$ Q $\rightarrow$ R
- BQ $\rightarrow$ R $\rightarrow$ P
- CR $\rightarrow$ P $\rightarrow$ Q
- DR $\rightarrow$ Q $\rightarrow$ P