This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Surgery
During exploration, a patient is found to have a tumor in the thymus that is invading the pericardium and surrounding the left and right phrenic nerves. The pathologist says that appears on frozen section to be a benign thymoma. The surgeon now should: 
Select and explain. 
A. Repeat frozen section, B. Attempt as complete a resection as possible, C. Close the chest and plan irradiation therapy, D. Close the chest and await permanent sections
B: Attempt as complete a resection as possible
Answer: B: Attempt as complete a resection as possible 
Explanation: Since the tumor is invading the pericardium and surrounding the left and right phrenic nerve maximum amount of tumor must be resected There is no advantage of frozen section