![Image](https://i.ibb.co/f4YTfhw/19-Feb19-3w.gif)
The graphs of y=7x+1 and y=kx^3 are represented in the figure shown (k is a constant). If line AB is parallel to the x-axis, what is the abscissa (x-coordinate) of point B?
(A) 1
(B) 0.75
(C) 0.5
(D) 0.25
(E) 0.125
Answer: [spoiler]___(C)__[/spoiler]