A.降低所有風(fēng)險(xiǎn)B.能分散系統(tǒng)風(fēng)險(xiǎn)C.降低非系統(tǒng)風(fēng)險(xiǎn)D.提高投資的收益
A.1 B.2 C.3 D.4
A.1000 B.1080 C.1400 D.1200