*/*_Chemical formula of metaphosphoric acid is?

• A. H‚Äö√á√âPO‚Äö√á√ë
• B. H‚Äö√á√ëP‚Äö√á√áO‚Äö√á√°
• C. HPO‚Äö√á√â
• D. Same as that of pyrophosphoric acid