If a Male and Female Are Having Unprotected Sexual Intercourse

If a male and female are having unprotected sexual intercourse, could pregnancy occur even though the male withdraws his penis before he ejaculates?

A) No, the male must ejaculate his sperm into the female vagina in order for conception to occur.
B) No, the refractory period can prevent this from happening.
C) Yes, during the plateau phase drops of liquid, which could contain live sperm may come out of the penis.
D) Yes, if a woman becomes aroused enough a fertilized egg may be released from the ovary.