A bridge is built across a river. One quarter of the bridge is over the left bank of the river and one third of the bridge is over the right bank. The river is $$120\text{m}$$ wide. How long is the bridge? 
选项为:A:$$150\text{m}$$  B:$$190\text{m}$$  C:$$240\text{m}$$  D:$$288\text{m}$$  E:$$324\text{m}$$  请回答其中一个选项.