With respect to the genetic code reading frame which of the following is wrong?

• A. 5‚Äö√Ñ√∂‚àö√ë‚àö¬• ‚Äö√Ñ√∂‚àö√∫‚àö‚↠3‚Äö√Ñ√∂‚àö√ë‚àö¬• direction reading frame
• B. The code is non ‚Äö√Ñ√∂‚àö√ë‚àö¬® overlapping
• C. No gaps present
• D. Flexible reading frame