23.Suppose a research firm conducted a survey to determine the mean amount steady smokers spend on cigarettes during a week. A sample of 100 steady smokers revealed that the sample mean is $20. And we know the population standard deviation is $5. What is the probability that a sample of 100 steady smokers spend between $19 and $21?

A) 0.0091

B) 0.9818

C) 0.4909

D) 0.9544

Can you please show work

we can use a Z-score table sheet