NO.PZ2022120702000095
问题如下：
The transition to a low carbon economy is expected to open up significant investment requirements.What would likely have the most financial risk for investors?
选项：
A.Early stage technology for hydro based transportation.
B.Energy efficient automobile factories.
C.Power infrastructure with proven renewable energy technology.
D.Upgrades to buildings to bring them to suitable standards.
解释：
向低碳经济的转型预计将带来大量投资需求。对投资者来说，投资水利运输早期阶段的技术可能面临最大的财务风险。
其他三个选项：节能汽车工厂；拥有经过验证的可再生能源技术的电力基础设施；对建筑物进行升级，使其达到适当的标准。这三个投资领域均有一定的发展水平，财务风险相对较小。
这个正确选项的原因是什么呢
