challenge: What is the key difference between a declarant and an affiant?
  
  A. A declarant makes a statement for personal use, while an affiant makes a statement for public use
  B. A declarant is a person who makes a statement under oath, while an affiant is not
  C. A declarant makes a statement without swearing to its truth, while an affiant swears to the truth of the statement before a notary public
  D. A declarant is a person who makes a statement in writing, while an affiant makes a verbal statement
  Answer: 