Fact: a tree growing a tree-growth ring occurs once per year
Question: Trees grow growth-rings one time each year; so which of these is correct?

What's the answer? pick from the following. * a tree with nine rings is nine years old. * a tree with six rings is seven years old. * a tree with eight rings is five years old. * telling how old a tree is is impossible based on rings.
a tree with nine rings is nine years old