Choose the interjection in the following section

a. gosh
b. sure
c. better
d. at

the latin root euqi means equal what is the meaning of the word equidistant in the following sentence

although they started at different positions on the track both cars were equidistant to the finish line.

a. at the same distance from a specific place
b. at the greatest distance from a specific place
c. at different distances from the same place
d. at a growing distance from the same place