Aisha sells 3 products: product A; product B and product C. In March, Aisha 
sold 3,570 units in total. The numbers of units sold for products A, B and C is 
in the ratio 10:5:2 respectively. How many units of B and C combined were 
sold by Aisha in march?
(A) 1,470 units
(B) 1,580 units
(C) 1,690 units
(D) 1,800 units
(E) 1,910 units