Which of the following statements regarding Barchan is/are correct ? 1. It is a crescent shaped mound of sand, which is deposited by the wind blowing constantly from one direction in a desert. 2. The windward side has a convex steep slope with maximum height at the centre. 3. Two ends of Barchan are called horns and point opposite to the direction the wind blows. Select the answer using the code given below :

Statement 1 is correct: Barchans are crescent-shaped sand dunes formed by wind action (aeolian process). They are typically found in deserts where the wind blows consistently from one direction and the sand supply is limited.

Statement 2 is incorrect: In a barchan dune, the windward side (facing the wind) is convex and has a gentle slope. It is the leeward side (the slip face) that is concave and has a steep slope.

Statement 3 is incorrect: The two ends or "horns" of a barchan point downwind, which is the same direction the wind blows. They do not point opposite to the wind direction.

Since only the first statement is scientifically accurate regarding the morphology of barchans, the correct answer is Option A (1 only).