**Core Concept**
The Bismuth/Strasberg classification system is a widely used method for categorizing bile duct injuries, particularly those occurring during cholecystectomy. This system helps in predicting the severity and potential complications of such injuries. The classification system focuses on the mechanism and location of the injury.

**Why the Correct Answer is Right**
A cystic blowout, also known as a bile duct blowout, occurs when there is a disruption of the cystic duct or the common bile duct due to increased pressure. In the Bismuth/Strasberg classification system, this type of injury is classified as B. The mechanism involves a sudden release of bile from the cystic or common bile duct, leading to a blowout or an extravasation of bile into the surrounding tissue or the peritoneal cavity. This classification helps in identifying the need for prompt surgical intervention to prevent further complications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately describe the Bismuth/Strasberg classification system. The correct classification for a cystic blowout is not A.
**Option C:** This option is incorrect as it does not accurately describe the Bismuth/Strasberg classification system. The correct classification for a cystic blowout is not C.
**Option D:** This option is incorrect as it does not accurately describe the Bismuth/Strasberg classification system. The correct classification for a cystic blowout is not D.

**Clinical Pearl / High-Yield Fact**
The Bismuth/Strasberg classification system is a crucial tool for surgeons to accurately diagnose and manage bile duct injuries. A thorough understanding of this classification system can help prevent misdiagnosis and ensure prompt treatment to minimize complications.

**Correct Answer: B. Cystic blowout is classified as B in the Bismuth/Strasberg classification system.**