In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
Q: While studying the rings in a fossilized tree trunk, a scientist notices a group of rings that are closer together than the other. This means that (A) the trees had more sunlight for those years (B) the trees were dead during those years (C) during those years, there was less precipitation (D) the trees had extra water those years
A:
C