In the designation ‚Äö√Ñ√∂‚à ö√ë‚à ö‚â§04B‚Äö√Ñ√∂‚à ö√ë‚à ö¬•, pitch of the chain is?$#

• A. 12.7mm
• B. 6.35mm
• C. 4mm
• D. None of the mentioned