问题：
[单选题] 某给水系统,自潜水层由管井取水,输送至配水厂清水池。管井取水泵扬程计算中的静扬程为( )。
A、管井最低动水位与清水池最高水位的高程差
B、管井设计动水位与清水池最低水位的高程差
C、管井内设计动水位与清水池最高水位的高程差
D、管井外设计动水位与清水池最高水位的高程差
参考答案：
A
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