For the nurse to distinguish that the bleeding of the patient is placenta previa or abruption placenta.. Whether there was accompanying pain

For the nurse to distinguish that the bleeding of the patient is placenta previa or abruption placenta. what should she ask the woman?
a. Whether there was accompanying pain
b. What she has done for bleeding
c. Estimation of blood loss
d. All of the above

Answer: A.
placenta previa presents bleeding without pain whilst the bleeding in abruptio placenta is painful.