Samudra Gupta is known for his political conquests from his Allahabad Pillar Inscription. In this context, which of the following statements are correct?
A. He made the frontier rulers of Kamarupa, Samatata, etc., pay obeisance and tributes to him.
B. He expelled the Shakas and Murundas through war.
C. He defeated, captured and later released the kings of Palakka, Kottura and Avamukta.
D. He exterminated Yaudheyas, Madrakas and Malavas.
Choose the correct answer from the options given below :
1. A and C only
2. B and D only
3. A, B and D only
4. B, C and D only