单项选择题

In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the best answer to each question on ANSWER SHEET TWO.
What does the news item mainly report

A. Parliamentary elections were held after a bomb.
B. A turmoil occurred in Nigeria and killed at least 10 people.
C. Voting materials were damaged due to an explosion.
D. The election officials suffered great casualties in the turmoil.