Jack. A signpost is a non-living thing and non living things do not grow. Sam is an adult and he has stopped growing already. Jack is a child and will continue growing the next few years.
I think the use of ibuprofen should be questioned with the concurrent use of hydrocortisone, a 28 corticosteroid. The use of medication together increases the risk of gastrointestinal bleeding. Ibuprofen and sertraline azithromycin, or ipratropium will not cause adverse effects.