In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Q: Question: Are the chemicals released at the same time? Passage 1:The sympathoadrenal system is a physiological connection between the sympathetic nervous system and the adrenal medulla and is crucial in an organism's physiological response to outside stimuli. When the body receives sensory information, the sympathetic nervous system sends a signal to preganglionic nerve fibers, which activate the adrenal medulla through acetylcholine. Once activated, norepinephrine and epinephrine are released directly into the blood by postganglionic nerve fibers where they act as the bodily mechanism for "fight-or-flight" responses. Because of this, the sympathoadrenal system plays a large role in maintaining glucose levels, sodium levels, blood pressure, and various other metabolic pathways that couple with bodily responses to the environment. During numerous diseased states, such as hypoglycemia or even stress, the body's metabolic processes are skewed. The sympathoadrenal system works to return the body to homeostasis through the activation or inactivation of the adrenal gland. However, more severe disorders of the sympathoadrenal system such as phaeochromocytoma (a tumor on the adrenal medulla) can affect the body's ability to maintain a homeostatic state. In such cases, curative agents such as adrenergic agonists and antagonists are used to modify epinephrine and norepinephrine levels released by the adrenal medulla.
Passage 2:Petraeus graduated from West Point in 1974. He earned the General George C. Marshall Award as the top graduate of the U.S. Army Command and General Staff College Class of 1983 at Fort Leavenworth, Kansas, receiving a Bachelor of Science degree in Military Science. He subsequently earned an M.P.A. in 1985 and a Ph.D. in international relations in 1987 from Princeton University's Woodrow Wilson School of Public and International Affairs, where he was mentored by Richard H. Ullman. At that time, he also served as an Assistant Professor of International Relations at the U.S. Military Academy from 1985 to 1987. His doctoral dissertation was titled "The American Military and the Lessons of Vietnam: A Study of Military Influence and the Use of Force in the Post-Vietnam Era". He also completed a military fellowship at Georgetown University's Edmund A. Walsh School of Foreign Service in 19941995, although he was called away early to serve in Haiti as the Chief of Operations for NATO there in early 1995.
Passage 3:Varaha Cave Temple (also Adivaraha Cave Temple) is a rock-cut cave temple located at Mamallapuram, on the Coromandel Coast of the Bay of Bengal in Kancheepuram District in Tamil Nadu, India. It is part of the hill top village, which is to the north of the main Mahabalipurm sites of rathas and the Shore Temple. It is an example of Indian rock-cut architecture dating from the late 7th century. The temple is one of the finest testimonial to the ancient Vishwakarma Sthapathis, of rock-cur cave architecture, out of many such caves also called mandapas. Part of the Group of Monuments at Mahabalipuram, the temple is a UNESCO World Heritage Site as inscribed in 1984 under criteria i, ii, iii and iv. The most prominent sculpture in the cave is that of Lord Vishnu in the incarnated form of a Varaha or boar lifting Bhudevi, the mother earth goddess from the sea. Also carved are many mythical figures.

A:
1