Step 1: Understanding the division of Vedas and their disciples.
According to the tradition, Vyasa divided the four Vedas and assigned each to a disciple:
- A. Rg- Veda ---Pila: Pila was the disciple for the Rg Veda.
- B. Yajur- Veda ---Vaishanpayan: Vaishanpayan was the disciple for Yajur Veda.
- C. Sama- Veda ---Jaimini: Jaimini was the disciple for Sama Veda.
- D. Atharva- Veda ---Sridhara: Sridhara is not associated with Atharva Veda.
Step 2: Conclusion.
The correct division is A, B, and C only.
Final Answer:
\[
\boxed{\text{The correct answer is 3. A, B and C only.}}
\]