In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
--------
Question: Question: A 65-year-old man with a history of pancreatic cancer undergoing chemotherapy. Emergency consultation for pain and edema of the entire lower limb from the groin. Which diagnostic test is more cost-effective to confirm the diagnostic suspicion? 
 Options:  <1> Dimer D. <2> Magnetic resonance. <3> Phlebography <4> Venous Doppler ultrasound. <5> Helical CT

Answer: 4


Question: Question: The denaturing of DNA: 
 Options:  <1> It increases when the temperature decreases. <2> It is accompanied by an increase in the absorption of UV light. <3> DNA with high G / C content does so at a lower temperature than those rich in A / T. <4> It is irreversible. <5> Indicates the hydrolysis of phosphodiester bonds.

Answer: 2


Question: Question: In what phase or phases of the dream are the night terrors ?: 
 Options:  <1> In the phases of deep slow sleep (phases 3 and 4). <2> In phase 2 <3> In REM sleep. <4> In phase 1 <5> They can occur indistinctly at any stage of the dream.

Answer:
1