Consider the function whose graph is the surface shown at the right.

Which traces go with which graphs below?

 1. The trace for
 2. The trace for
 3. The trace for
 4. The trace for
 
Drag the surface to rotate it

  
A
 
B
 
C
  
D
 
E
 
F

In order to get credit for this problem all answers must be correct.