Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: 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?
Observations should always be recorded.
Observations are subjective.