You can keep the book for another week, but you ______ lend it to others. [ ]

A. needn't

B. mustn't

C. aren't

D. must

陆九渊认为：“心即理，天下万物之理不外吾心，格物只须反省内求就可以。”这一命题观点属于 ( )

A．朴素唯物论

B．主观唯心论

C．客观唯心论

D．经验论