Find the incorrect matching
Haematoxylin - Heart wood of Haematoxylon campechianum
Santalin - Heartwood of Pterocarpus santalinus
Brasilin - Pith of Caesalpinia sappan
Tannins - Heart wood of Acacia catechu (Katha)
Brasilin is actually a red pigment found in the heartwood of Caesalpinia echinata, also known as Brazilwood. Caesalpinia sappan is another species of plant that also produces a red dye, but the dye obtained from it is known as sappanwood extract. Hence, the correct answer is option 3.