求< img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14950079294223bf7ecfe356c4cf598546addcd14e625image92.png" >( )
A:F(X)+C
B:F(X)
C:F.(X)+C
D:F.(X)

出自:延安大学经济数学(专升本)1