Which one of the following statements regarding a Fiord are correct ?1. Most of the fiords were formed due to a rise in sea level after melting of Pleistocene ice sheets.2. It is an emergent coast which originally was a submerged glaciated valley.3. It is a long, narrow inlet of the sea bounded by steep mountain slopes extending to considerable depths.4. It is a glaciated valley that has been inundated by the sea and forms a deep steep-sided coastal inlet.Select the correct answer using the Codes given below.

• A. 1, 2 3 and 4
• B. 1, 3 and 4
• C. 2 and 4
• D. 1, 2 and 3