What is range factor in cruise method 1?

• A. \(\left[\frac{V_{mdi}}{C} E_{max}\right]\)
• B. \(\left[\frac{V_{max}}{C} E_{max}\right]\)
• C. \(\Big\{\frac{2u^3}{u^4+1}\Big\}\)
• D. \(\Big\{\frac{2u^4}{u^4+1}\Big\}\)