Black Background & B/W Filter

I have a single photo that I’d like polished: please replace the existing backdrop with a clean, solid black and then apply a classic black-and-white filter so the subject stands out crisply. No other alterations are required.

Keep the original resolution, return the finished image as both high-quality JPEG and PNG, and maintain clear contrast so details don’t get lost against the new dark background. A quick turnaround is appreciated—once I review and confirm the result, the project is complete.