## Core Concept
In India, metropolitan magistrates have specific judicial powers, including the ability to pass sentences. The Criminal Procedure Code, 1973, outlines the powers of various magistrates.

## Why the Correct Answer is Right
A metropolitan magistrate in India can pass a sentence of imprisonment for up to 3 years, or a fine not exceeding ten thousand rupees, or both, as per Section 29 of the Criminal Procedure Code, 1973. This limitation is a key aspect of their jurisdiction.

## Why Each Wrong Option is Incorrect
* **Option A:** This option is incorrect because it does not accurately reflect the maximum sentencing power of a metropolitan magistrate.
* **Option B:** This option is incorrect because it also does not accurately represent the maximum sentence.
* **Option D:** This option is incorrect as it exceeds the actual limit.

## Clinical Pearl / High-Yield Fact
A crucial point to remember is that the maximum sentence a metropolitan magistrate can pass is up to 3 years of imprisonment. This is a key fact for judiciary and legal proceedings.

## Correct Answer Line
**Correct Answer: C. 3 years.**