单项选择题
按照图画出所示图形，求剖面线区域的面积（）
A.5090.4373 B.5090.4733 C.5090.4337 D.5090.3734
A.1574.9245 B.1574.9425 C.1574.9452 D.1574.9254
A.11023.9833 B.11023.9338 C.11023.9383 D.11023.8933
