The manufacturers of a deodorant claim that the mean drying time of their product is, at most, 15 minutes. A sample consisting of 16 cans of the product was used to test the manufacturer’s claim. The experiment yielded a mean drying time of 18 minutes with a standard deviation of 6 minutes. Test the claim at the 0.05 significance level.
选项：

A:Computed test statistic = 2 and is greater than 1.96, so reject H0: µ ≤ 15.
B:Computed test statistic = 2 and is greater than 1.753, so reject H0: µ = 15.
C:Computed test statistic = 2 and is greater than 1.645, so reject H0: µ ≤ 15.
D:Computed test statistic = 2 and is greater than 2.131, so reject H0: µ ≤ 15.