Consider the following statements about Indian forestry. 1. About 40% of the Indian forests are in the inaccessible mountainous regions which impede the speedy transfer of fallen trees. 2. Although according to India's forest policy, a high proportion of the land area shall be covered by forest except in some states, the percentage of forest cover is precariously low. 3. Exploitation of forests is less time-consuming and less costly, as almost in every forest a single type of tree dominates. 4. The annual productivity of the forests is 3.5 cubic metres per hectare. Of these statements,