WHICH_OF_THE_FOLLOWING_IS_NOT_A_THEORY_OF_FATIGUE??$

• A. Orowan theory
• B. Griffith‚Äö√Ñ√∂‚àö√ë‚àö¬•s theory
• C. Fatigue limit theory
• D. Wood‚Äö√Ñ√∂‚àö√ë‚àö¬•s theory