Which of the following statements are correct with regard to the Transparency International?
1. It is a non-profit, non-governmental organisation.
2. It is dedicated to fighting corruption.
3. It is best known for its Corruption Perceptions Index.
4. Its secretariat is located in London, UK.
Select the answer from the options given below:

A. 1, 2 and 3

B. 2, 3 and 4

C. 1, 3 and 4

D. 1, 2, 3 and 4

Answer: Option A