A grand multipara at 34 weeks' gestation is brought to the emergency department because of vaginal bleeding. The nurse suspects that the client has a placenta previa. What characteristic typical of placenta previa supports the nurse's conclusion?
A) Painful vaginal bleeding in the first trimester
B) Painful vaginal bleeding in the third trimester
C) Painless vaginal bleeding in the first trimester
D) Painless vaginal bleeding in the third trimester
