[单选题]
How does meiosis prom;aay:+4cw4, oz+c mt7 px0 p ;udzomzc d;n.sn8bjy3 ulh7;poote variation?
A. Crossing over of sister chromatids
B. Independent assortment during telophase I
C. Crossing over during prophase I
D. Fusion of gametes during sexual reproduction