Arrange the following vegetation zones of the Western Himalayas in ascending order of their altitudinal distribution (from lowest to highest elevation): 1. Alpine Grasslands (Margs/Bugyals) 2. Sub-tropical Pine Forests (Chir Pine) 3. Moist Temperate Deciduous/Broad-leaved Forests (Oak and Chestnut) 4. Sub-alpine and Coniferous Forests (Silver Fir and Blue Pine) Select the correct sequence using the codes given below:

Options:

• A: 2 - 3 - 1 - 4
• B: 3 - 2 - 4 - 1
• C: 2 - 3 - 4 - 1
• D: 3 - 2 - 1 - 4

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