Which equation correctly represents how this area model should be used? A) 500 + 140 + 160 + 50 = 850 B) 500 + 140 + 160 + 160 = 960 C) 600 + 160 + 150 + 40 = 950 D) 600 + 160 + 60 + 40 = 860 i neeeddd hhhhellllppppp