For Multivariate Analysis,the Techniques of Partial Correlation and Multiple Regression

For multivariate analysis,the techniques of partial correlation and multiple regression and correlation are superior to elaboration (i.e. ,controlling for a third variable by constructing partial tables) because

A) computations are easier.
B) they avoid the necessity of computing Pearson's r.
C) they provide less information and are less confusing.
D) they provide more information.