Which of the following is an angle between opposite faces in Knoop indenter?

• A. 130¬¨¬®‚Äö√†√ª
• B. 120¬¨¬®‚Äö√†√ª
• C. 136¬¨¬®‚Äö√†√ª
• D. 122¬¨¬®‚Äö√†√ª