Now, let's supposethe National Disaster Management Authority (NDMA) wants to start evacuating people from low-lying regions if the rainfall in August exceeds 2,000 mm. Whatis the probability that the NDMA would undertake evacuation activities? ( = 1,600 mm and = 400 mm) ?

1) 0.15%

2) 2.5%

3) 5%

4) 16%