**Core Concept**
The management of bile duct leaks after cholecystectomy is crucial to prevent further complications. The choice of treatment depends on the severity of the leak and the patient's overall condition. In this scenario, a subhepatic collection with a cystic duct leak is a postoperative complication that requires prompt intervention.

**Why the Correct Answer is Right**
Percutaneous drainage of the fluid collection is the best management option in this case. This approach allows for the removal of infected bile and prevents further complications such as abscess formation or sepsis. ERCP-guided stenting or percutaneous catheter placement can also be considered to facilitate bile drainage. However, in this scenario, percutaneous drainage of the fluid collection is the most appropriate initial step.

**Why Each Wrong Option is Incorrect**
**Option A:** Immediate laparotomy is not the best initial management option for a subhepatic collection with a cystic duct leak. This approach is more invasive and may lead to further complications such as bleeding or infection.

**Option C:** Laparotomy and surgical exploration of the bile duct with T-tube insertion may be considered in more severe cases or if percutaneous drainage is unsuccessful. However, it is not the best initial management option in this scenario.

**Clinical Pearl / High-Yield Fact**
In cases of bile duct leaks, it is essential to monitor for signs of sepsis and abscess formation. Early percutaneous drainage can prevent these complications and reduce the risk of long-term sequelae.

**Correct Answer:**
✓ Correct Answer: B. Percutaneous drainage of fluid