Which of the following expression represents the CORRECT value of coefficient
of curvature?

A

$$C_c=\frac{(D_{30})^{2}}{D_{60}\times D_{10}}$$

B

$$C_c=\frac{(D_{60})^{2}}{D_{30}\times D_{10}}$$

C

$$C_c=\frac{(D_{10})^{2}}{D_{60}\times D_{30}}$$

D

$$C_c=\frac{D_{10}}{D_{60}\times D_{10}}$$