The discriminant can be determined from the number of roots of the graph.
If Disc> 0, the function has two distinct roots
If Disc = 0, the function has a repeated root
If Disc < 0, the function has no real root.
Since, the given function has two distinct roots i.e. it cross x-axes at two different points, its discriminant will be positive.
So, the answer to this question is option C
