Each function below represents the population of a different city, measured in thousands of people, where the input $t$ is time in years. $$\begin{aligned} A(t) \amp= 50(0.95)^t\\ B(t) \amp= 50(0.75)^t\\ C(t) \amp= 25(1.05)^t\\ D(t) \amp= 25(1.5)^t \end{aligned}$$ For each verbal description, choose the correct function:

• “The city begins with $25{,}000$ people and increases by $5\%$ per year.”
  Answer: ? A B C D
• “The city begins with $50{,}000$ and decreases by $5\%$ per year.”
  Answer: ? A B C D
• “The city begins with $25{,}000$ and increases by $50\%$ per year.”
  Answer: ? A B C D
• “The city begins with $50{,}000$ and decreases by $25\%$ per year.”
  Answer: ? A B C D