If Most of the People with High Scores on a Test

Multiple Choice

If most of the people with high scores on a test are close to average on a retest,and most of those with low scores on the first test are also close to average on the retest,what if anything can we conclude?

A) The test has low reliability.
B) The test has high validity.
C) Scores on the test follow the normal distribution.
D) We can draw none of these conclusions.