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: Surgery
[{'content': 'Ca urinary bladder commonly presents as - \nSelect and explain. \nA. Haematuria, B. Frequency, C. Dysuria, D. Abdominal lump', 'role': 'user'}, {'content': 'Answer: A \nExplanation: "Painless haematuria is by far the most common symptom and should be regarded as indicative of a bladder carcinoma untill proven otherwise."\nAlso Remember\nMC primary tumor which gives secondary to penis\xa0→\xa0bladder carcinoma\nCommonest tumor of Urinary bladder\xa0→\xa0transitional cell Ca\nCommonest tumor of U.B. in a child\xa0→\xa0rhabdomyosarcoma\nMC symptom of renal cell Ca →\xa0painless hematuria\nMC symptom of wilm\'s tumor\xa0→\xa0mass in abd.\nMC symptom of bony metastasis\xa0→\xa0pain\nMC symptom of renal stone\xa0→\xa0pain\nEarliest symptom of vesical calculus\xa0→\xa0Frequency\nCardinal symptom of renal trauma\xa0→\xa0Hematuria\nMC symptom of acute arterial occlusion →\xa0pain', 'role': 'assistant'}]