Which of the following statements is true according to the passage?
There has been only one great fire in the USA in recent 40 years that led to high death rate.
The fire in Kentucky in 1977 made only a few people killed.
There has been no great fire in the USA in recent 40 years that leads to high death rate.
There have been several great fires in the USA in recent 40 years that lead to high death rate.