challenge: What happened to Sungdare Sherpa as a result of staying with Hannelore Schmatz after her death on a 1979 expedition?
  
  A. He lost most of his fingers and toes to frostbite.
  B. He lost his eyesight due to extreme cold exposure.
  C. He suffered severe dehydration and exhaustion.
  D. He developed a phobia of high altitudes.
  Answer: 