A. A prediction based on the data is not completely reliable, because the means of samples 1 and 3 are too close together,
B. A prediction based on the data is reliable, because the means of
samples 1 and 3 are very close together.
C. A prediction based on the data is not completely reliable, because
the mean of sample 2 is noticeably higher than the means of the
other two samples.
D. A prediction based on the data is reliable, because there are no
noticeable differences among the samples,