What is the cause of pseudopregnancy?

Choose the correct sequence of events occurring in human reproduction.

Which of the following statements are true about the female reproductive system?
$(A)$ Both estrogen and progesterone are necessary for development of follicle
$(B)$ Progesterone production is under the control of $LH$
$(C)$ The part of the oviduct is isthmus; has a narrow lumen and it joins the uterus
$(D)$ During pregnancy all events of the menstrual cycle stop and there is no menstruation
$(E)$ The graafian follicle ruptures to release the primary oocyte from the ovary by the process called ovulation

In which organisms are macrolecithal eggs found?

$I -$ Sperm,$II -$ Testosterone,$III -$ Relaxin,$IV -$ Ovum,$V -$ Estrogen,$VI -$ Progesterone.
Produced by human males $- P$
Produced by human females $- Q$
$P$ $Q$

Observe the given figure carefully and identify the site of fertilization by considering the parts labeled as $a, b, c,$ and $d$.