The correct option is D All of the above
Cartilage has widely spaced cells, which are interspersed in the matrix made of proteins and carbohydrates. It covers the ends of bones at joints. Cartilage is not rigid as the bone but it is stiffer than muscle. The nose tip is cartilaginous. Ear pinna is cartilaginous. There are 6 cartilages present in the larynx, which supports it. Therefore, option D is correct.