The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress
concentration factor Kt as
(A) (Kf + 1)/ (Kt + 1)
(B) (Kf - 1)/ (Kt - 1)
(C) (Kt + 1)/ (Kf + 1)
(D) (Kt - 1)/ (Kf - 1)
concentration factor Kt as
(A) (Kf + 1)/ (Kt + 1)
(B) (Kf - 1)/ (Kt - 1)
(C) (Kt + 1)/ (Kf + 1)
(D) (Kt - 1)/ (Kf - 1)