Section 137 IEA describes the order of examination of a witness. The three stages are:

1. Section 137 IEA defines the three stages: (i) Examination-in-chief — examination of a witness by the party who calls him; (ii) Cross-examination — examination by the adverse party; (iii) Re-examination — examination by the party who called him, subsequent to cross-examination. 2. Section 138 orders the sequence: examination-in-chief, then cross-examination, then re-examination. 3. Re-examination is limited to explaining matters arising in cross-examination; new matter requires court's leave. 4. Section 145 IEA permits cross-examination of a witness as to a previous statement in writing — the foundation of contradiction. 5. Hence option B is correct. _Source: Indian Penal Code 1860 / Code of Criminal Procedure 1973 / Indian Evidence Act 1872 (Bare Acts, indiacode.nic.in) — Indian Evidence Act, Section 137_