Explanation:
D
A fleshy fruit with leathery exocarp is called hesperidium. It is many chambered and many seeded fleshy fruit developed from multicarpellary, syncarpous and superior ovary. Hesperidium fruits, which include most citrus fruit, have leathery rind embedded with glands producing volatile compounds.
The epicarp is leathery and glandular, mesocarp is thin and smooth. Ex- lemon and orange.