Teacher:You are given a science question (hard-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.
Teacher: Now, understand the problem? Solve this instance: A botanist developed a new fertilizer that was tested on different types of plants under different conditions. The results indicated that the fertilizer increased plant growth. Which would be the best way to validate the results?
(A) have another lab replicate the tests (B) look over the results several times (C) develop a new hypothesis to test (D) change the procedure
Student:
A