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'.

Input: Consider Input: Question: Question linked to image n 16 Patient of 84 years who presents an ulcerated tumor lesion that shows in the scalp of more than 20 years of evolution. No palpable locoregional adenopathies. Obviously the lesion must be biopsied for diagnostic confirmation but, a priori, which of the following diagnoses seems most likely?
Options: <1> Merkel cell tumor. <2> Basal cell carcinoma. <3> Squamous carcinoma <4> Amelanotic malignant melanoma. <5> Cutaneous B-cell lymphoma

Output: 2

Input: Consider Input: Question: The BRCA-1 gene mutation is associated with a high risk of:
Options: <1> Acute myocardial infarction. <2> Breast cancer <3> Alzheimer disease. <4> Parkinson's disease <5> Tay-Sach disease.

Output: 2

Input: Consider Input: Question: The reaction of a halogenated derivative with triphenylphosphine leads to a salt of:
Options: <1> Sulfonium. <2> Diazonio. <3> Ammonium. <4> Pyridinium <5> Phosphonium
Output: 5