Find the Curvature of the Space Curve $\kappa = \csc t$

Multiple Choice

Find the curvature of the space curve.
-r(t) = -3i + (t + 4) j +(ln(cos t) + 9) k

A) $\kappa = \csc t$
B) $\kappa = \sin t$
C) $\kappa = \sec t$
D) $\kappa = \cos t$