This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Essential for tumor metastasis is - \nSelect and explain. \nA. Angiogenesis, B. Tumorogenesis, C. Apoptosis, D. Inhibition of tyrosine kinase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Harshmohan textbook of pathology 7th edition. tumour angiogenesis play a very significant role in metastasis since the new vessels formed as apa of growing Tumor are more vulnerable to invasion because this evolving vessels are directly in contact with cancer..', 'role': 'assistant'}]