Statement 1 is not a deciduous tree: Jackfruit (Artocarpus heterophyllus) is a tropical evergreen tree native to the Western Ghats of India and other parts of Southeast Asia. It retains its foliage throughout the year and is typically found in regions with high rainfall.

Statement 2 is a deciduous tree: Mahua (Madhuca indica) is a common species found in tropical deciduous forests across the Indian subcontinent, particularly in central and northern India. It sheds its leaves during the dry season, usually between February and April.

Statement 3 is a deciduous tree: Teak (Tectona grandis) is the most dominant and economically important species of tropical deciduous forests (both moist and dry) in India. It is well-known for shedding its leaves during the dry season to conserve moisture.

Since only Mahua and Teak are deciduous trees, the correct answer is 'Only two'.