When you connect a $30$ cm long copper wire to a certain battery, the current through the wire is $1\mathrm{.}5$ A$.$ You then connect three of these batteries end to end and attach a $15$ cm long bronze wire to them. This bronze has a resistivity that is three times larger than copper's. If the bronze wire has a diameter that is half the copper wire's, what is the current through the bronze wire? A$.9$ A B$.1\mathrm{.}5$ A C$.0\mathrm{.}25$ A D$.0\mathrm{.}75$ A E$.4\mathrm{.}5$ A