Rearrange the following five sentences/group of sentences (A), (B), (C), (D), and (E) in the proper sequence to form a meaningful paragraph; then answer the questions given below them.

A. The IAS is a part of the permanent bureaucracy of the nation, and is an inseparable part of the executive of the Government of India.

B. Upon confirmation of service, an IAS officer serves a probationary period as a sub-divisional magistrate.

C. The Indian Administrative Service (IAS) is the administrative arm of the All India Services.

D. Completion of this probation is followed by an executive administrative role in a district as a district magistrate and collector which lasts several years.

E. IAS officers may enter the IAS by passing the Civil Services Examination.