Staging in Adenocarcinoma lung

Q) Patient with 2cm lung nodule, biopsy proven adenocarcinoma. CT shows hilar lymph node 1.5cm and left pleural effusion. Pleural fluid cytology is positive for malignant cells. What is the stage?

A. T1N1M0
B. T1N2M1
C. T4N1M0
D. T1N1M1
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