challenge: What is unique about the term lengths of councilmembers elected during the 2021 and 2023 City Council elections in New York City's 47th City Council district?
  
  A. They will serve standard four-year terms
  B. They will serve six-year terms to account for redistricting
  C. They will serve one-year terms as a trial period
  D. They will serve two-year terms due to a change in the city's charter
  Answer: 