Definition: You are given a question on high school government and politics. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Which of the following is an example of an implied power of the Congress?
(A)regulation of interstate commerce (B)borrowing money on the credit of the United States (C)oversight of executive branch agencies (D)declarations of war

C