Given the task definition and input, reply with output. 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.

Jenna gave a report to her class about the Orion Nebula. She told the class that it was discovered in 1610. Which was most likely the topic of her paper?
(A) young stars (B) neutron stars (C) the death of stars (D) the classification of stars
A