T-Scores for Student X on an Achievement Test Battery Standardized

Multiple Choice

T-scores for student X on an achievement test battery standardized on the same population are spelling 35, math 62, social studies 50, and English grammar 52. Each test has a SEM of 2; the tests are not intercorrelated. We conclude that

A) X is strongest in spelling.
B) X is strongest in math.
C) there are no substantial differences in X's achievements in these four areas.
D) it is not possible to compare X's performance on these subtests.