## Core Concept
The question tests the knowledge of pharmacological agents associated with an increased risk of hemorrhagic stroke. This involves understanding the side effects and mechanisms of various drugs, particularly those that affect blood vessels, coagulation, or blood pressure.

## Why the Correct Answer is Right
Cocaine is a powerful stimulant drug known to cause significant cardiovascular effects, including hypertension. This increase in blood pressure can lead to vascular damage and increase the risk of hemorrhagic stroke. Cocaine use has been directly linked to an increased risk of intracranial hemorrhage, including subarachnoid hemorrhage and intracerebral hemorrhage.

## Why Each Wrong Option is Incorrect
* **Option A:** While certain anticoagulant and antiplatelet drugs can increase the risk of hemorrhagic stroke, the direct and potent effect on blood pressure and vascular integrity makes cocaine a more specifically associated agent with hemorrhagic stroke compared to general anticoagulant effects.
* **Option B:** Typically associated with causing or exacerbating hypertension, but not as directly linked to hemorrhagic stroke as cocaine.
* **Option D:** Not commonly associated with an increased risk of hemorrhagic stroke in the same direct manner as cocaine.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **cocaine use is a significant risk factor for hemorrhagic stroke**, particularly in younger patients. This is due to its potent vasoconstrictive effects and the resultant acute hypertension.

## Correct Answer: C. Cocaine