Regarding the Effects of Coaching on SAT Scores, Educational Testing

Regarding the effects of coaching on SAT scores, Educational Testing Service concluded that

A) coaching has a significant effect on SAT-Verbal, but not only SAT-Mathematical scores.
B) short-term, intensive drill on SAT-type items does not lead to significant gains in SAT scores.
C) coaching programs involving many hours of course work and assignments can affect test scores.
D) the effects of coaching depend on the similarity of tested material to coached material.