What is endurance factor?

• A. \(\big[\frac{E_{max}}{C}\big]\)
• B. \(\big[\frac{E_{max}}{VC}\big]\)
• C. \(\big\{\frac{2u^3}{u^4+1}\big\}\)
• D. \(\big\{\frac{2u^4}{u^4+1}\big\}\)