From a circular sheet of paper of radius 50 cm, a sector of 40% area is removed in the shape of an arc section. If the remaining part is used to make a conical surface, then the ratio of the radius to height of the cone is

A

$$\frac{4}{3}$$

B

$$\frac{5}{4}$$

C

$$\frac{3}{4}$$

D

$$\frac{7}{8}$$