A 99% confidence interval for the difference in population means (1 - 2) is calculated based on the data below.

According to that confidence interval, which of the following statements is correct?

Sample (1) sample size=20, sample mean=45, standard deviation 3. Sample (2) sample size= 35, sample mean= 43 standard deviation= 5

A. 1 is smaller than 2.

B. 1 is larger than 2.

C. There is no statistical difference between 1 and 2 .

D. Insufficient information to determine.