Which of the following are reasons or facts that made Goodnow separate the spheres of Politics and Administration?
1. Both were separate disciplines.
2. Separation of powers provided the basis of distinction.
3. He was keen to promote Administration as an independent discipline.
4. Politics and Administration are two separate functions of government.
Choose the correct answer from the options given below:

A. 1, 2 and 3

B. 1, 2 and 4

C. 1, 3 and 4

D. 2, 3 and 4

Answer: Option D