Which One of the Following Statements Is True Using α

Which one of the following statements is true using α = 0.10?

A) Because the 90% confidence interval for the population slope includes zero, we fail to reject the null hypothesis and conclude that there is no relationship between the hours of sleep and the age of the adult.
B) Because the 90% confidence interval for the population slope does not include zero, we fail to reject the null hypothesis and conclude that there is no relationship between the hours of sleep and the age of the adult.
C) Because the 90% confidence interval for the population slope includes zero, we can reject the null hypothesis and conclude that there is a relationship between the hours of sleep and the age of the adult.
D) Because the 90% confidence interval for the population slope does not include zero, we can reject the null hypothesis and conclude that there is a relationship between the hours of sleep and the age of the adult.