The results of a one-sample hypothesis test are reported as follows: t(18) = 2.25, p < .05. Based on this report, what was the statistical decision and how big was the sample?
A. The null hypothesis was rejected using a sample of n = 18.
B. The null hypothesis was rejected using a sample of n = 19.
C. The null hypothesis was not rejected using a sample of n = 18.
D. The null hypothesis was not rejected using a sample of n = 19.