Which of the following pregnant women would the nurse suspect has placenta previa?

Which of the following pregnant women would the nurse suspect has placenta previa?
A.   A gravida 3, para 2 in her twenty-eighth week of gestation who reports painless vaginal bleeding and whose blood pressure is 116/78 mm Hg.
B.   A gravida 1, para 0 in the twentieth week of gestation with vomiting, white vaginal discharge, and blood pressure of 170/94 mm Hg.
C.   A 43-year-old gravida 5, para 4 in the thirtieth week of gestation with severe abdominal pain, dark red vaginal bleeding, and blood pressure of 110/64 mm Hg.
D.   A 15-year-old gravida 1, para 0 in the twelfth week of gestation with abdominal and shoulder pain, no bleeding, and blood pressure of 100/54 mm Hg.