Two people are placing a principal amount of $3,425 in a savings account with 6.71% annual interest for 16 years. Account A uses quarterly compounded interest, while Account B uses continuously compounded interest.

Part A: Which type of function best models each account? Support your answer using complete sentences. (2 points)

Part B: What is the APY for account A? Show all necessary steps. (4 points)

Part C: What is the APY for account B? Show all necessary steps. (4 points)