What is the distance between the two concentric circles?

The lengths of the diameters of concentric circles are 6 and 8. What is the distance between the circles?
(A) 0
(B) 1
(C) 2
(D) 14
PLEASE, only answer this if you really know your math, and you know exactly how to do this type of math. Please explain your answer and don't just pick any random answer.
1 answer 1