Provide an appropriate response. _____ 3) The rational expression 120 100 describes the cost, in millions of dollars, to inoculate x percent of the current population of cattle against a particular virus. Choose which of the following statements are true with regard to this mathematical model. I. The expression will be undefined when x = 100. II. The cost of inoculating 90 percent of cattle is 800 million dollars more than the cost of inoculating 70 percent of cattle. III. This expression can always calculate inoculation costs for any population of cattle. (Multiple choice options found on the following page.) A) Only I and II are true. B) All three statements are true. C) Only II and III are true. D) Only I and III are true