Definition: You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
Input: A group of students are observing a fish tank for a school assignment. The group is to share the observations with the class. Which statement about observations is true?
(A) Observations should always be recorded. (B) Observations should be collected only once. (C) Observations are only collected by scientists. (D) Observations are always correct if used in a chart.
Output:
A