I can't tell if I am 2C or 3A..?

Hi there, I'm new to this and am seeking help on this site for how to better care for my type of hair.Some characteristics of my hair:-Is curlier when shorter, the curl is stretched more when long in length-The bottom of my hair (just above the neck) is much straighter/limp than the rest of my hair-Hair at the crown of my head will be curly morning after wash, but limps out as the day goes on (help on keeping this curly would be nice)Thanks!:)