You will be given a definition of a task first, then some input of the task.
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.

For half an hour, a student watches two different types of flowering bushes and counts the number of butterflies that come to feed on each bush. What would be the best way to show the data?
(A) a scatterplot (B) a pie chart (C) a bar graph (D) a line graph
Output:
C