This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
A 16 year old girl was brought to the psychiatric emergency after she slashed her wrist in an attempt to commit suicide. On enquiry her father revealed that she had made several such attempts of wrist slashing in the past, mostly in response to tril fights in her house. Fuher she had marked fluctuations in her mood with a pervasive pattern of unable interpersonal relationship. The most probable diagnosis is: 
Select and explain. 
A. Borderline personality disorder, B. Major depression, C. Histrionic personality disorder, D. Adjustment disorder
A: Borderline personality disorder
Answer: A: Borderline personality disorder 
Explanation: A i.e. Borderline Personality DisorderSchizophrenia can easily be ruled out by absence of disorganized speech, disorganized behaviour (or catatonia), delusions, hallucinations, & negative symptoms (ex blunt affect) for more than 6 months & leading to social / occupational dysfunction.