Read the following context and answer the question. Context: Everybody knew Shandor Marley's mother liked to spend more time flirting with serial killers than she did taking care of things at home. So when her son went round with an air rifle popping his neighbours like they were allotment pigeons, they figured all the boy really needed was a bit of attention. Shandor finally flipped one day after finding out the inbred farm boys who made his life hell most days were in fact his half-brothers. He returned home to confront his mother only to find her pritt-sticking press cuttings of the Mad Killer into a brand new scrapbook and seemingly not in the least bit concerned by her son's unexpected discovery. Luckily Shandor's shooting spree didn't do too much damage beyond putting one of his so-called new father's eyes out, which could be considered doubly unfortunate given as the so-called new father in question owned the old byre Shandor and his mother called home. After Shandor had spent enough time shut away in borstal with the kind of kids who would've sent his mother all weak at the knees, he went straight home half-expecting the byre to be boarded up with a blu-tacked note saying she was lugging her stupid arse to Texas to spring her latest psycho boyfriend from his cell on death row. Shandor was thinking how much that excuse would sit well with her as he scuffed up the stone track to the byre with a black bin-bag of belongings and a sunburned arm across his forehead to shield himself from the glare. The place looked pretty much the same as he remembered it, only three years worse off. The strip of grass outside the back door was parched yellow and paint peeled around the blown-out windows. He had a hand on the door before he knew for sure it was still lived-in. He flapped thunderbugs off his forearm and creaked open the door. The kitchen stank of stale cigarettes and the dregs of spirit bottles. Question: Why did Shandor spent time in borstal? Answer:

Options:
[i] He used drugs;
[ii] not enough information;
[iii] He stole from people;
[iv] He shot people;
Answer:
[iv]