Stepwise regression is a method to:

A、eliminateinsignificantvariablesfromamultipleregressionequation.;
B、selectthebestregressionequationwithasingleindependentvariable.;
C、increasethetotalsumofsquares.;
D、selectindependentvariablestoincludeinamultipleregressionequationthatincreasethemultiplecoefficientofdeterminationthemost.