Statement 1 is correct: Chastana was a Saka ruler who established one of the two major Kshaharata lines of the Western Kshatrapas in the Ujjain area around the late 1st century CE. His lineage, known as the Bhumaka line, included powerful rulers like Rudradaman I. Statement 2 is incorrect: The final defeat and annexation of the Western Kshatrapa kingdom, specifically the defeat of Rudrasimha III, was achieved by Chandragupta II Vikramaditya, not Samudragupta. Chandragupta II assumed the title 'Sakari' (destroyer of Sakas) after this conquest. Statement 3 is correct: The Junagadh inscription of Rudradaman I lists the vast extent of his kingdom, which included regions like Akara (East Malwa), Avanti (West Malwa/Ujjain), Anupa (Narmada valley), Aparanta (North Konkan), Saurashtra (Kathiawar), Maru (Marwar), Sindhu-Sauvira (Sindh), Kukura, Arbud (Aravalli region), and Nishadha. These cover Konkan, Narmada valley, Kathiawar, parts of Gujarat, and Malwa.