Single/multi-choice problem: Which of the following solutions is better for the following goal:
How to Clear the Opening on a Spray Can

Options are:
(a). remove the built up paint with warm water. Dampen a fresh rag with clean, warm water. Wipe the nozzle's opening with the damp rag. Test the spray paint on a piece of scrap material
(b). remove the built up paint with warm water. Dampen a fresh rag with clean, warm water. Wipe the nozzle's opening with the damp shop vacuum. Test the spray paint on a piece of scrap material
(a).