Which color is the line that represents an equivalent ratio? How can you tell by looking at the lines?

Responses
A blue; The graph is a vertical line.blue; The graph is a vertical line.
B orange; The graph is a horizontal line.orange; The graph is a horizontal line.
C pink; The graph of the pink line passes through the origin.pink; The graph of the pink line passes through the origin.
D green; The graph of the green line intercepts the y-axis at a point other than (0, 0).green; The graph of the green line intercepts the y-axis at a point other than (0, 0).

C pink; The graph of the pink line passes through the origin.

You can tell by looking at the lines because the pink line passes through the point (0, 0) on the graph, indicating that it is an equivalent ratio.