If differentiation of any function is zero at any point and constant at other points then it means?

Function is parallel to y-axis at that point

Function is parallel to x-axis at that point

Function is parallel to y-axis at that point

Function is discontinuous at that point

If differentiation of any function is zero at any point and constant a

1.	If differentiation of any function is zero at any point and constant at other points then it means?
A.	Function is parallel to x-axis at that point
B.	Function is parallel to y-axis at that point
C.	Function is constant
D.	Function is discontinuous at that point
Answer» B. Function is parallel to y-axis at that point