All the following statements are correct about the reproductive system of earthworm except
A. Fertilization is external and cross fertilization
B. There are two pairs of testes in 10th and 11th segments and one pair of varies attached at the intersegmental septum of 12th and 13th segment
C. Accessory glands are present on the ventral surface of 17th and 19th segments
D. Earthworm is unisexual
