Sexual reproduction has not been observed in Bd.A Bd sporangium initially contains a single,haploid cell.Which of the following processes must be involved in generating the multiple zoospores eventually produced by each sporangium?
1)S phase
2)cytokinesis
3)mitosis
4)meiosis
A)1 and 2
B)1 and 3
C)2 and 3
D)1, 2, and 3
E)1, 2, and 4