8. Three individuals, Mary, Jack and Helen, make up the total demand for donuts per month in a particular market. Mary's demand curve is 5P = 5000- 1.25QM. Jack's demand curve for donuts is given by P = 1000 - 0.5QJ. Helen's demand curve is given by QH = 2000- 2P. The market demand curve would be: A) Q = 400 - 0.25P B) P=400 - 0.125Q P= 1000 - 0.25 Qm C) P= 1000 - 0.25Q D) P = 1000 - 0.125Q E) P = 1000 - 1.25Q F) P = 1000 - 4Q G) P = 4000 - 0.125Q H) P = 250 -4Q P= 1000 - 0.5 QJ I) none of the above P= 1000 - QH