What is the equation to find the rebound deflection if the relationship between intermediate deflection reading Di and the final deflection reading Df is Di-Df

• A. D=0.02(Do-Df)+0.02k(Di-Df)mm
• B. D=0.02(Do-Df)+0.02k(Di-Df)cm
• C. D=0.02(Do-Df)mm
• D. D=0.02(Do-Df)cm