What are the signs of a true apostle according to Latter-day Saints?

Inspired by an [answer](https://christianity.stackexchange.com/a/87282/50422) to a [related question](https://christianity.stackexchange.com/q/87271/50422) , I would like to ask: What are *the signs of a true apostle* according to Latter-day Saints? **Note**: I'm borrowing the expression "the signs of a true apostle" from 2 Corinthians 12:11-12 (ESV): > 11 I have been a fool! You forced me to it, for I ought to have been commended by you. For I was not at all inferior to these super-apostles, even though I am nothing. 12 **The signs of a true apostle** were performed among you with utmost patience, **with signs and wonders and mighty works**. ____ Mirror question on BH.SE: [What are the signs of a true apostle? 2 Corinthians 12:12](https://hermeneutics.stackexchange.com/q/71677/38524) ____ More general question: https://christianity.stackexchange.com/questions/86686/how-do-believers-in-modern-day-apostles-interpret-2-corinthians-1211-12