challenge: What was the outcome of the appeal filed by Sanjeev Maheshwari and Vijay Singh in the Allahabad High Court in 2017?
  
  A. The case was sent back to the trial court for re-examination
  B. They were acquitted of all charges
  C. Their sentences were reduced to 10 years imprisonment
  D. Their appeal was dismissed and the life imprisonment sentence was upheld
  Answer: 