Which of the Following Statements,A - D,regarding Acute Effects of Ionizing

Which of the following statements,A - D,regarding acute effects of ionizing radiation exposure is NOT correct? If all are correct,select E.

A) Low levels of exposure generally have no acute effect but can cause DNA damage.
B) Temporary reduction in white blood cell count occurs at effective doses of about 0.25 - 1.0 Sv.
C) At intermediate levels of exposure,a person may experience radiation sickness.
D) Death in hours can result at an effective dose of approximately 5.0 Sv.
E) All of these statements are correct.