<prompt> Investigation of choice in Hemobilia?ERCPAngiographyUpper GI endoscopyBarium study  <response>: Hemobilia is suspected if Upper GI endoscopy shows presence of blood in duodenum but confirmation of diagnosis is done only after angiography. Celiac axis angiography should always be accompanied with superior mesenteric aeriography because anomalousaccessory right hepatic aery may originate from the SMA. 