Consider the following information : 1. Chandraketugarh : Odisha : Trading Port town 2. Inamgaon : Maharashtra : Chalcolithic site 3. Mangadu : Kerala : Megalithic site 4. Salihundam : Andhra Pradesh : Rock-cut cave shrines In which of the above rows is the given information correctly matched?

Option (b) is correct because Inamgaon is a major post-Harappan Chalcolithic site in Maharashtra, and Mangadu is a significant Megalithic site in Kerala known for its iron-age burials. Row 1 is incorrect because Chandraketugarh is located in West Bengal, not Odisha, and Row 4 is wrong as Salihundam is primarily a Buddhist stupa and monastery site rather than rock-cut caves. The core concept being tested is the geographical and historical classification of key archaeological sites in ancient India.