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【单选题】
【图片】‍如图所示的液压系统，两液压缸有效面积为A1=A2=200【图片】，缸Ⅰ的负载F1=5×【图片】N，缸Ⅱ的负载F2=3×【图片】N，溢流阀、顺序阀和减压阀的调整压力分别为3.0MPa， 2MPa和1.5MPa。试分析液压泵启动后，两换向阀处于中位时A点的压力值为（ ）MPa。
A.
0
B.
1.5
C.
2.5
D.
3
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