**Core Concept**
Flumazenil is a benzodiazepine receptor antagonist used to reverse benzodiazepine-induced sedation and anesthesia. It acts by competitively inhibiting the action of benzodiazepines at the GABA_A receptor.

**Why the Correct Answer is Right**
Flumazenil has a rapid onset of action, with peak effects occurring within 1-2 minutes. It is primarily metabolized by the liver, with a short half-life of approximately 50-70 minutes. Flumazenil can also precipitate seizures in patients with a history of seizure disorders or those who have been taking benzodiazepines for extended periods.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Option D:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
Flumazenil can be used to reverse benzodiazepine-induced sedation, but it should be used with caution in patients who have been taking benzodiazepines for extended periods, as it may precipitate seizures.

**Correct Answer:** A.