Your Friend Ann Who Is Four Weeks Pregnant Calls You

Your friend Ann who is four weeks pregnant calls you in great distress.She has never had rubella before,and this afternoon she was exposed to the disease at a child's birthday party.Should she be concerned?

A) No. The placenta is a perfect filter and will prevent the virus from reaching and affecting the embryo.
B) Yes. If she does get rubella, the disease will make the effects of morning sickness worse.
C) No. The risk to the embryo/fetus is in the germinal period prior to implantation and the development of the placenta.
D) Yes. At this stage of gestation, rubella poses serious risks of heart defects, cataracts, or deafness to the embryo.