Crystallography - GS questions based on daily current affairs

1)   Consider the following statements

1. Crystallography is the experimental science of determining the arrangement of atoms in the crystalline solids
2. It is a well known science in ancient India and china as they knew about the process of crystallizing sugar and salt
3. For analysis, crystallography uses diffraction technique using X-ray, electrons or neutrons.
4. The United Nations proclaimed the year 2014 as the International Year of Crystallography.

Which of the above statements are true?

a. 1,2,3
b. 2,3,4
c. 1,3,4
d. All the above