Which of the following is false about klenow fragment?

• A. Polymerization activity
• B. 3‚Äö√Ñ√∂‚àö√ë‚àö¬•‚Äö√Ñ√∂‚àö√∫‚àö‚â†5‚Äö√Ñ√∂‚àö√ë‚àö¬• exonuclease activity
• C. 5‚Äö√Ñ√∂‚àö√ë‚àö¬•‚Äö√Ñ√∂‚àö√∫‚àö‚â†3‚Äö√Ñ√∂‚àö√ë‚àö¬• exonuclease activity
• D. 324 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 928 residue of polymerase I