During the COVID$-19$ period, a total of three samples were collected from Jinnah Hospital Lahore. Let's consider the attributes recorded for each patient. Patient $1,$ named Ali, is male and exhibits symptoms of fever with no cough. His blood pressure is recorded as high $($marked as positive $"P"$ in the table$),$ and he experiences no low blood pressure, headache, or heartburn. Patient $2,$ named Hassan, is also male. He displays symptoms of fever and cough, but unlike the previous patient, his blood pressure is neither high nor low. Additionally, he reports experiencing a headache, and heartburn is absent $($marked as negative $"N"$ in the table$).$ Moving to Patient $3,$ named Sadia, she is female and experiencing fever with no cough symptoms. However, her blood pressure is recorded as high, and she reports no instances of low blood pressure or heartburn, but headache is recorded as positive.

These patient records provide valuable information for understanding and analyzing the presence or absence of various symptoms and conditions among different individuals.

A$-$ Sketch a structured table

B$-$ Sketch a dissimilarity matrix.

C$-$ Identify which patients have same disease.