本文介绍了RPGI对拉丁美洲和加勒比海地区提供的公共物品支持，并引用了2015年Edexcel I A-Level Economics考试的一个问题，涉及公共物品的特性，如非竞争性和非排他性。答案解释了由于公共物品的非排他性，私营部门通常供应不足。
The Regional Public Goods Initiative (RPGI) supports countries in Latin America and the Caribbean and has provided US$73 million finance for the provision of public goods across the region.
RPGI支持拉丁美洲以及加勒比海区域的国家并且给予了7300万美金的财政支持以帮助跨区月的公共货物。
请阅读下面的文献并回答下面几个关于公共货物的选项哪个是对的？
(Source： adapted from http-yAvww.iadb.org/en/topics/regional-integratiori/ what-is-the-regional-puWic-goods-program,2803.html)
A The private sector is able to exclude people from consuming public goods
B They may be under provided by the private sector
C There is rivalry in the consumption of public goods
D They are
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