A client, at 6 weeks gestation, arrives at the OB clinic for her initial visit and requests to hear the fetal heartbeat. What should the nurse include in the teaching regarding cardiac development?

C You will first feel your baby move in week 24 of pregnancy D The heart formation begins in week 5 of pregnancy and we can hear it by Doppler at 6 weeks A The fetal heartbeat can be heard via Doppler by 4 weeks of pregnancy B The fetal heartbeat can be heard by external Doppler around 10-12 12 weeks of pregnancy