<prompt> Regarding stones in gall bladder the following are true except:Mixed stones are common in the westIn Saints triad diverticulosis of colon and hiatus hernia co exist90 of gall stones are radio-opaqueIs a risk factor in the development of GB carcinoma  <response>: Ans: c 90 of gall stones are radioopaqueRef: Bailey Love, 24th ed, p. 1103, 1104 p. 1095 for d 23rd ed, p. 975 for c 