*/*_When the dimension is expressed as 20¬≠-0.025 ‚Å∫‚Å∞‚à ô‚Å∞¬≥‚ŵ, then the basic size is?

• A. 20 mm
• B. 20.035 mm
• C. 20.025 mm
• D. 19.975 mm