Using Following Result Find a Set of Parametric Equation of Conic

Multiple Choice

Using following result find a set of parametric equation of conic. $x = h + a \cos \theta , y = k + b i s n \theta$
Vertices: $( \pm 17,0 )$ ; foci: $( \pm 15,0 )$

A) $x = 8 \cos \theta , y = 17 \sin \theta$
B) $x = 15 + 17 \cos \theta , y = 15 - 8 \sin \theta$
C) $x = 8 - 15 \cos \theta , y = 17 + 15 \sin \theta$
D) $x = 15 - 17 \cos \theta , y = 8 \sin \theta$
E) $x = 17 \cos \theta , y = 8 \sin \theta$