Correct choice is (b) Rs.11000/cu m
Explanation: Shisham is best known economic timber species of the rosewood genus sold internationally, but it is also used as fuel wood and for shade and shelter. With its tolerance of light frosts and long dry seasons, this species deserves greater consideration for tree farming, agro forestry and deciduous reforestation. After teak, it is the most important cultivated timber tree of Bihar, which is the largest producer of shisham timber in India.