<prompt> Human: I just checked my credit score on nerd wallet and credit karma. Its really good: 803. But probably too good.One of my credit cards has its age listed as 29 years even though Ive only had it for 2 years. And thats tripling my average age of accounts.Is that just a credit karma nerd wallet bug and my real credit score lower?Or is it typo this is just a mistake in my favor?And what, if anything, should I do about it?Thanks!  <response>: Maybe your parents had you as an authorized user on a card? 