hope it's neither as you shouldn't be fertilizing at all for the first few weeks. but your plant looks fine - if you are worried about the first leaf set it is natural for them to die.
fuck all wrong with them .. Those little water leafs are just dying ,, That is a sign for you to start feeding with nutes @ 1/4 streanth , wait until you can just pic them water leafs off with ease before you start feeding though
great plan if you want to kill a sprout. assuming you used garden soil it has enough fertilizer for the first few weeks. adding nutes will kill it. ask around.