Option 1 -> Includes Girija Devi who was a Hindustani classical vocalist, not Carnatic.
Option 2 -> Includes Girija Devi who belonged to Hindustani tradition, not Carnatic.
Option 3 -> Includes Girija Devi who was famous for Hindustani thumri and dadra, not Carnatic music.
Option 4 -> Thyagaraja and Muthuswami Dikshitar (part of Carnatic Trinity), and M.S. Subbulakshmi (legendary Carnatic vocalist) - all belong to Carnatic music tradition.
Hence, Option 4: (B), (C) and (D) only -> Girija Devi was a Hindustani classical singer, while Thyagaraja and Muthuswami Dikshitar were two of the three composers in the Carnatic Trinity, and M.S. Subbulakshmi was one of the greatest Carnatic vocalists of all time -> correct