Assertion :- Ice melts faster at higher ltitude.
Reason :- At high altitude atmospheric pressure is higher.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Explanation

To analyze the given assertion and reason, we will break down the statements step by step.

### Step 1: Understand the Assertion
The assertion states: "Ice melts faster at higher altitude."

**Analysis**:
- Generally, as altitude increases, the temperature tends to decrease. Lower temperatures can slow down the melting process of ice. Therefore, the assertion that ice melts faster at higher altitudes is incorrect.

### Step 2: Understand the Reason
The reason states: "At high altitude atmospheric pressure is higher."

**Analysis**:
- In fact, atmospheric pressure decreases as altitude increases. This means that the statement about atmospheric pressure being higher at high altitudes is also incorrect.

### Step 3: Conclusion
Since both the assertion and the reason are incorrect, we conclude that:
- The assertion "Ice melts faster at higher altitude" is false.
- The reason "At high altitude atmospheric pressure is higher" is also false.

### Final Answer
Both the assertion and the reason are false.