Surgery General 44a7fd56 True about Ca colon - A 1/3rd of cases shows liver metastasis B Obstruction common in sigmoid colon C CEA is useful for prognostic impoance D All High-Yield Explanation Answer 'a' i.e. 1/3rd of cases shows liver metastases; 'b' i.e. Obstruction common in sigmoid colon 'c' i.e. CEA is useful for prognostic impoance