Which of the following statement (s) is/are correct about ancient Indian literature?

• A. he Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism
• B. he Shastras contained works of science and philosophy
• C. he Bhagvad Gita a later addition to the Mahabharata enshrines a philosophical doctrine and in it are described the three paths to salvation: karma, gyan and bhakti
• D. ll of the above