-According to the graph, how did the number of days with cold symptoms compare for people taking placebo and zinc lozenges?

A) People taking the placebo had cold symptoms for three more days than people taking the zinc lozenges.
B) People taking the placebo had cold symptoms for seven more days than people taking the zinc lozenges.
C) People taking the zinc lozenges had cold symptoms for three more days than people taking the placebo.
D) People taking the zinc lozenges had cold symptoms for seven more days than people taking the placebo.