At the red light, seven buses of the same length stop in a line. Given that the length of each bus is $$5$$ meters, and the distance between each two adjacent buses is $$2$$ meters, how long is the line? 
选项为:A:$$35$$ m  B:$$49$$ m  C:$$47$$ m  D:$$54$$ m  请回答其中一个选项.