Fred Made 103 and Frank Made 96 on an Achievement

Multiple Choice

Fred made 103 and Frank made 96 on an achievement test with a confidence interval of 4.These results indicate that

A) Fred's true score is definitely higher than Frank's true score.
B) measurement error can account for the differences in their scores.
C) the true scores of each student are probably very close.
D) the test used to generate these scores must be very reliable.