[单选题]
Consider an open pipe of lkc; p5s723n 1xax,0m rsaced-wqtdaxc *1 sn+ekvdff;/dd )vv3)bbu. ngth L. What are the wavelengths of the three lowest tones produced by thisvv .))3dbkfvdb/f;d u pipe?
A. 4L, 2L, L
B. 2L, L, L/2
C. 2L, L, 2L/3
D. 4L, 4L/3, 4L/5
