Under Section 82 IPC, an act done by a child below what age is conclusively NOT an offence (doli incapax)?

1. Section 82 IPC: 'Nothing is an offence which is done by a child under seven years of age.' — irrebuttable presumption of doli incapax. 2. Section 83 IPC: an act done by a child above seven and below twelve, who has not attained sufficient maturity of understanding to judge of the nature and consequence of his conduct, is NOT an offence — rebuttable presumption. 3. The Juvenile Justice (Care and Protection of Children) Act, 2015 governs juveniles aged below 18 (with a heinous-offence carve-out for 16-18 transfers). 4. Sections 82-83 are substantive defences; the JJ Act provides procedural sentencing protections. 5. Hence option A is correct. _Source: Indian Penal Code 1860 / Code of Criminal Procedure 1973 / Indian Evidence Act 1872 (Bare Acts, indiacode.nic.in) — IPC, Sections 82 and 83_