Solution: D. is less than the radius
Analysis: We have a point inside a circle. In that case, we know the radius is the length of the line segment from the center to a point on the circumference of the circle.
According to the statement, we have a point inside the circle. So, any distance since the center of the circle would be less than the radius. That's because any point is near to the center in comparison to the distance of circumference.