1. With reference to the scientific progress of ancient India, which of the statements given below are correct?
- Different kinds of specialized surgical instruments were in common use by the first century AD.
- Transplant of internal organs in the human body had begun by the beginning of the third century AD.
- The concept of the sine of an angle was known in the fifth century AD.
- The concept of cyclic quadrilaterals was known in Seventh century AD.
Select the correct answer using the codes given below