A 37-year-old rural female patient developed pain in the lower abdomen and pelvic regions. Her physician suspects a ruptured ectopic pregnancy. However, because of the isolation of the rural community, no medical imaging or laboratory procedure is available and the physician decides to perform a culdocentesis. In the latter procedure, the needle will aspirate from which of the following spaces?
选项：

A:ovarian fossa;
B:rectouterine pouch;
C:uterine body;
D:uterine cervix;
E:vesicouterine pouch