问一道题：NO.PZ2018053101000008 [ CFA I ]

NO.PZ2018053101000008问题如下Comparewith reinvestment in infrastructure, publicly trainfrastructure securities are characterizeby:A.higher concentration risk.B.more-transparent governance.C.greater control over the infrastructure assets.B is correct.Publicly trainfrastructure securities, whiinclu shares of companies, exchange-trafun,anlistefun thinvest in infrastructure, provi the benefits of transparent governance, liquity, reasonable fees, market prices, anthe ability to versify across unrlying assets. reinvestment in infrastructure involves a large capitinvestment in any single project, resulting in high concentration risks. reinvestment in infrastructure provis control over the assets anthe opportunity to capture the assets’ full value.对比于直接型的基建类投资，公开交易的基建类证券（publicly trainfrastructure securities）类似于REITs，投资者投资的是交易的份额，而不是直接去购买基建资产，因此分散化会更好，不会有集中度过高的问题，所以A不正确；同时因为证券化的过程相当于将底层资产控制权分割，通过投资的公开交易的份额，对底层的基建资产控制力较弱，故C不正确；公开交易的基建类证券是公开交易流通的，监管会要求较好的数据披露，所以B正确。老师好，分散化具体如何定义？