Indicate whether the following statements refer to: 1) cilia ; 2) mitotic Spindle ; 3) both ; 4) neither microtubule A. The basal body is the organizing center. B. It is arranged in a "9 + 2" array. C. It is involved in moving fluid over the surface of cells. D. It is nucleated at the centrosome. E. It uses dynein motors. F. It is involved in sperm motility..