What does the news item mainly report？A．Parliamentary elections were held after a bomb.B．A

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.

请帮忙给出正确答案和分析，谢谢！