Star Trek: Live Long and Prosper Mystery Cache

Caching: The finder's frontier.  These are the voyages of the caching explorers.  Their life-long mission: to explore strange new towns, to seek out new caches and new hiding spots, to boldly go where no muggle has gone before.

This Star Trek Geoart is a tribute for Trekkies and non Trekkies all around. Answer the questions to find the final coordinates for each cache in the series. Cache is not at the posted coordinates. Enjoy!

Live Long and Prosper

The Vulcan salute was a hand gesture used by Vulcans. It involved holding the palm of one hand outwards while placing the fingers in a "V" shaped by separating the middle and ring fingers, while keeping the others together, with the thumb extended. The salute was part of both Vulcan greetings and farewells. The formal phrase associated with the salute in both cases was "Live long and prosper." - memory-alpha.org

QUESTION FOR FINAL COORDINATES:The Vulcan Salute and the Vulcan Blessing, "live long and prosper", first appeared in what TOS episode? 

A. Amok Time - N39 25.418 W087 26.135

B. Wink of an Eye - N39 25.546 W087 26.652

C. The Apple - N39 25.566 W087 26.987

D. I, Mudd - N39 25.478 W087 26.633