question_answer

With reference to the scientific progress of ancient India. which of the statements given below are correct?

1. Different kinds of specialised surgical instruments were in common use by AD 1st century.

2. Transplant of internal organs in the human body had begun by the beginning of AD 3rd century.

3. The concept of sine of an angle was known in AD 5th Century-

4. The concept of cyclic quadrilaterals was known in AD 7th century

Select the correct answer using the codes given below.

A)  1 and 2           

B)  3 and 4

C)  1, 3 and 4                    

D)  All of these