Answer- B
A team of scientists and Sherpas, led by 31-year-old electrician and mountain guide Tenzing Gyalzen Sherpa, has erected a new version of the world's highest altitude weather station on Mount Everest after the original was destroyed by hurricane-force winds.
The team of mountaineers and scientists has set a new record by placing the weather station at an elevation of 8,810 meters, which is only 39 meters (128 ft) below the summit of Everest, as per the Guinness World Records.