The constitution of India has made which of the following provisions to safeguard and ensure the independence and impartial functioning of the Supreme court?

a. The salaries, allowances, privileges, leave and pension of the judges of the Supreme Court cannot be changed to their disadvantage after their appointment even during a financial emergency.

b. The retired judges of the Supreme Court are prohibited from pleading or acting in any Court or before any authority within the territory of India.

c. The Parliament is not authorised to curtail the jurisdiction and powers of the Supreme Court.

d. The judges of the Supreme Court are provided with the Security of Tenure.

Select the correct answer using the correct code given below: