The discovery of Oak flora in 1966 added a new chapter to the history of Indian Sericulture. Which one of the following states is the leading producer of Oak tasar silk?

1. The question concerns Oak tasar silk production, which gained importance after the discovery of Oak flora suitable for tasar silkworm rearing. 2. Oak tasar culture is practiced predominantly in the sub-Himalayan regions of India. 3. Among the given options, Manipur is the leading producer of Oak tasar silk in India. 4. Other states like Assam, Bihar, and Orissa are known for other types of silk (like Muga in Assam, Eri, and Mulberry silk) but Manipur specializes in Oak tasar.