Answer:
Number of solutions are exist when lines are parallel is = zero.
Option C
Explanation:
Given two lines,
Case 1: If lines are intersect.
One and only one solution that is intersection point of lines.
Case 2: Collinear lines or represent same line.
In this case there are so many solutions (infinite solutions)
Case 3: Both lines are parallel.
They never intersects, So no solution is exist. Zero solution
So, zero is answer.
That's the final answer.