Grinding wheel is specified as ‚Äö√Ñ√∂‚à ö√ë‚à ö‚à ´A 46 K 5 B 17‚Äö√Ñ√∂‚à ö√ë‚à öœÄ. Grain size of a wheel will be

• A. Coarse
• B. Medium
• C. Fine
• D. Very Fine