thE purposE oF thE writEr is mAinly to ______.
A．givE A BriEF ACCount oF CAliForniA AnD its proBlEms
B．inForm us why CAliForniA is so AttrACtivE AnD EnDuring
C．promotE AnD populArizE A woulD-BE ClAssiCAl Book
D．mAkE A CommEnt on mr. stArt AnD A rEviEw oF his mAstErpiECE