It says that there is a length of a line that goes through the circle that connects points A and B, and that it does not pass through the center of the circle and that this line has a length of 16. Well, by definition, the longest chord available in a circle is the diameter. Well, they expressly state that this chord is not the diameter; therefore, the diameter has to be greater than 16. Therefore, the circumference of the circle which would be P x D(diameter), has to be greater than 16 x P. So the answer here is A.