Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R). **Assertion (A):** A mirage is observed in hot deserts when light rays from the sky bend upwards near the ground. **Reason (R):** The refractive index of air increases with height above the hot ground, causing light rays to bend away from the normal as they travel downwards. Select the correct answer using the codes given below:

Options:

• A: Both A and R are true and R is the correct explanation of A.
• B: Both A and R are true but R is not the correct explanation of A.
• C: A is true but R is false.
• D: A is false but R is true.

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