What Is the Difference Between Reliability and Validity

Multiple Choice

What is the difference between reliability and validity?

A) Reliability is the degree to which a test score correlates with some external criterion and validity is the degree to which a test score reflects an individual's true abilities.
B) Reliability is the extent that scores predict future scores and validity is the accuracy of these scores.
C) Reliability is how well scores correlate with future measures and validity is the extent that scores on one test correlate with scores on a similar test.
D) Reliability is the consistency in test scores over time and validity is the extent to which a test measures what it says it measures.