The daily demand for rice at a shopping center is normally distributed with a mean of 2100 kg and a standard deviation of 200 kg. In the morning, the manager found that there are only 1800 kg of rice available.

A,What is the probability that the shopping center will run out for rice before closing on that day?

B.What is the probability that there will be demand of rice in between 2000 kg and 2200 kg?

Please type yourself, not in paper.