What function is represented by the mapping diagram shown?
O A. F(x)= x+3
O B. F(x)= x-3
O C. F(x) = 3x
O D. F(x) = 1
![What function is represented by the mapping diagram shown O A Fx x3 O B Fx x3 O C Fx 3x O D Fx 1 class=](https://us-static.z-dn.net/files/dd5/a14d1c1879b6f5fa548b5495104a824a.png)