Lin, Mat, and Ned went for a run of different distances L, M, and N respectively. During the run, they covered an equal distance before they stopped for a water break. At that time, Lin had completed $$\frac{1}{2}$$ of distance L, Mat had completed $$\frac{2}{3}$$ of distance M and Ned had completed $$\frac{3}{5}$$ of distance N.  What is the ratio of the distance L to distance M to distance N? 
选项为:A:$$1:2:3$$  B:$$2:3:5$$  C:$$12:9:10$$  D:$$15:20:18$$  请回答其中一个选项.