What is the origin of the species epithet 'bindi' in Rhabdophis bindi?

A. A type of Indian flower that the species was first found near
B. A name given by the species' discoverer, Bindi
C. A type of rock formation where the species was first discovered
D. A reference to the red marking on the nape region of the species, similar to the Bindi worn by Indian women
Answer: 