challenge: In the Eastern Orthodox Church, when is Psalm 86 (Psalm 87 in the Masoretic Text) read during the year?
  
  A. On Tuesdays and Thursdays during Lent, and on Christmas Eve
  B. On Saturdays and Mondays during Easter
  C. On Sundays and Wednesdays during Epiphany
  D. On Mondays and Fridays during Advent
  Answer: 