we know that Two circles in the same plane are internally tangent if they intersect in exactly one point and the intersection of their interiors is not empty.
case (A and B)--------> are externally tangent case (A and C)--------> are externally tangent case (B and C)--------> are internally tangent
Since the question asks for an internal tangent, we must review its definition. An internal tangent is a common tangent intersecting the line segment joining the centers of circles.
According to the graph, the answers would be the above.
