Which of the following factors are responsible for the decline of the District Collector's prestige and authority in the post-independence period?(a) Change in the form of the Government.(b) Growth in the number of departments in the district.(c) The emergence of Panchayati Raj.(d) Rise of commissionerate system of law and order administration.

• A. (a) and (b)
• B. (a), (b) and (c)
• C. (b), (c) and (d)
• D. (a), (b), (c) and (d)