Which of the following statements with reference to Glacial trough is/are correct ? 1. Alpine glaciers strip valleys of their soil, regolith and sediment to form glacial troughs. 2. When the sea level is below the floor of a glacial trough, the seawater enters as the ice front recedes, creating a fiord. Select the answer using the code given below :

Statement 1 is correct; alpine glaciers erode V-shaped valleys into U-shaped glacial troughs by stripping away soil and sediment. Statement 2 is incorrect because a fiord is formed only when the floor of a glacial trough is below sea level (or the sea level is above the floor), allowing seawater to inundate the valley as the ice retreats. If the sea level were below the floor, seawater could not enter to create a fiord. According to NCERT and standard geomorphology, fiords are submerged glaciated valleys. Thus, only Statement 1 is correct.