Organizers for a local race plan to provide 4 water bottles for each runner, 328 people have signed up to run in the race which of the following equations represent the this situation and what does the variable x represent

a) 328/x=4, x=number of water bottles needed my answer just check that all

b)x/328=4,x=total number of runners

c)x/4=328; x=total number of water bottles needed

d)4/x=328; x=total number of runners