Final answer:
The formula for the circumference of a circle is C = 2πr, where r is the radius of the circle. Without knowing the radius, we cannot determine the correct answer option.
Step-by-step explanation:
The circumference of a circle can be found using the formula C = 2πr, where π is a mathematical constant approximately equal to 3.14159 and r is the radius of the circle. To find the circumference in terms of π, we need to know the radius of the circle. Without that information, we cannot determine the correct answer option.