Questions 29 and 30 are based on the following news. At the end of the news item , you will be given 10 seconds to answer the questions.
Now listen to the news.
What is the main idea of the news

A．A fire broke out when people were busy scooping up the petrol.
B．More than 100 people were engulfed by flames.
C．A fire caused by gas spill put 57 people to death.
D．As the petrol started to spill, local people ran up with cans to collect it.