Answer with explanation please. Thanks.

[Ch.4 Market Demand] Suppose the market for mangoes is composed of two consumers: Alice and Jake. Alice's demand for mangoes is given by P = 10 -2QA, and Jake's demand for mangoes is given by P = 2 - QJ. Which of the following pictures describes the market demand curve for the mango market? (Note that the graphs are not.drawn to scale.) P 10 12 10 2 - ----- 0 4 7 O 0 2 5 Q (a) (b) 12 10 5 2 5 7 Q 0 2 5 O (c) (d)