I personally think its C but you do you :P
Answer:
Action painters
Explanation:
The action painters were led by Jackson Pollock and Willem de Kooning, who worked in a spontaneous improvisatory manner often using large brushes to make sweeping gestural marks. Pollock famously placed his canvas on the ground and danced around it pouring paint from the can or trailing it from the brush or a stick. In this way the action painters directly placed their inner impulses onto the canvas.
Well, if you want, you need the right software to begin with. Then, you want to read a manual on it, or just use YouTube to figure it out, but the software is most important. Then, just use trial and error.