What do A, B, C and D represent?

Options

A. `{:(,A,B,C,D),(,"infundibulum ","fertilization" ,"myometrium" ,"morula"):}`
B. `{:(,A,B,C,D),(,"infundibulum","fertilization", "endometrium", "blastocyst"):}`
C. `{:(,A,B,C,D),(,"isthmus" ,"fertilization" ,"myometrium" ,"blastocyst"):}`
D. `{:(,A,B,C,D),(,"isthmus" ,"fertilization" ,"endometrium" ,"morula"):}`

Answer

B