Need ! | will give ! v which situation does the graph represent? a. tom starts a rock collection. each week he adds 15 more rocks. the graph shows how many rocks tom has each week. b. tom has 5 rocks in his collection. each week he adds 15 more rocks. the graph shows how many rocks tom has each week. c. tom has 10 rocks in his collection. each week he adds 5 more rocks. the graph shows how many rocks tom has over time. d. tom has 15 rocks in his collection. each week he adds 5 more rocks. the graph shows how many rocks tom has over time.