TASK DEFINITION: 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'.
PROBLEM: Question: Amantadine is a drug that can be used as: 
 Options:  <1> Antiviral and antiparkinsonian. <2> Antipsychotic and antiemetic. <3> Anxiolytic and antifungal. <4> Antifungal and antiparkinsonian. <5> Antifungal and anti-migraine.

SOLUTION: 1

PROBLEM: Question: In the respiratory chain: 
 Options:  <1> Ferrosulfurized proteins contain heme groups. <2> The heme groups are in carotenoids. <3> Cytochromes contain iron and sulfur groups. <4> Ubiquinones transport protons and electrons. <5> All transporters carry two electrons.

SOLUTION: 4

PROBLEM: Question: Patients undergoing gastric surgery require vitamin B12 replacement therapy for: 
 Options:  <1> CLH deficiency - which hinders the absorption of nutrients. <2> Excessive loss of this vitamin in the stool. <3> Low intake of food as a result of anorexia. <4> Deficiency in its absorption due to lack of intrinsic factor. <5> Excessive loss of this vitamin in the urine.

SOLUTION:
4