Choose the best answer for this multiple choice question
What is the currency of the United States?
A - Yen
B - Ruble
C - Dollar
D - Euro
C - Dollar
Complete the following task based on the instruction and optional input provided.### Instruction:
Choose the best answer for this multiple choice question

### Input:
What is the currency of the United States?
A - Yen
B - Ruble
C - Dollar
D - Euro

### Output:
C - Dollar