A 30-year-old primigravida at 10 weeks’ gestation is on Warfarin for a mechanical mitral valve. She attends antenatal clinic. Which statement best reflects current guidance regarding Warfarin use in pregnancy?AWarfarin is completely safe in the first trimesterBWarfarin is teratogenic and usually avoided in the first trimester, with switching to LMWH when possibleCWarfarin must be continued throughout pregnancy in all women with mechanical valvesDStopping Warfarin in early pregnancy carries no thrombotic riskEWarfarin does not cross the placentaCheck my answer