Two copper wires $A$ and $B$ have the same diameter and lengths of $3 \ cm$ and $5 \ cm$ respectively. If their resistances are $R_A$ and $R_B$ and their resistivities are $\rho_A$ and $\rho_B$,then which of the following is correct?
- A$R_A > R_B$,where $\rho_A > \rho_B$
- B$R_A > R_B$,where $\rho_A < \rho_B$
- C$R_A > R_B$,where $\rho_A = \rho_B$
- D$R_A < R_B$,where $\rho_A = \rho_B$
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