In a certain unit, the radius of gyration of a uniform disc about its central and transverse axis is \(\sqrt{2.5}\) . Its radius of gyration about a tangent in its plane (in the same unit) must be
(A) \(\sqrt{5}\)
(B) 2.5
(C) 2\(\sqrt{2.5}\)
(D) \(\sqrt{12.5}\)
