The correct option is A Cartilage
Achondroplasia is a form of short-limbed dwarfism. The word 'achondroplasia' literally means 'without cartilage formation'. It is a hereditary condition in which the growth of long bones by ossification of cartilage is retarded. This results in very short limbs and sometimes a face that is small in relation to the normal-sized skull.
Therefore, the correct answer is option B.