A right circular cone and a right cylinder with same height 20 does not have same circular base but the circles are coplanar and their centers are same. If the cone and the cylinder are at the same side of the plane and their base radii are 20 and 10, respectively, what is the ratio of the volume of the part of the cone inside the cylinder over the volume of the part of the cone outside the cylinder? <spanclass=′latex−bold′>(A)</span>3<spanclass=′latex−bold′>(B)</span>2<spanclass=′latex−bold′>(C)</span>35<spanclass=′latex−bold′>(D)</span>34<spanclass=′latex−bold′>(E)</span>1