<prompt> In a case of ovarian tumor revealed unilateral ovarian tumor with ascites positive for malignant cells. Laparotomy is performed. All other structures were free of disease. Stage of her disease is:Stage I cStage III aStage III bStage III c  <response>: Ans. A. Stage I cThe patient falls under FIGO staging, stage Ic because it has ovarian tumor with ascites positive for malignant cells. 