NO.PZ2024121001000094
问题如下：
Which of the following best describe a commercial payment infrastructure investment选项：
A.Public or private sector end users agree to payment of a fixed income stream over the period during which the asset is available for use. B.Operator has right to collect service or user fees over the operating period. C.contracts for difference (CfDs) are used解释：
Option A is fixed or availability-based payment，option B is regulation-based payment如题
