When 1.88 g of AgBr(s) is added to a 10–3 M aqueous solution of KBr, the concentration of Ag is 5 x 10–10 M. If the same amount of AgBr(s) is added to a 10–2 M aqueous solution of AgNO3, the concentration of Br– is
(A) 9.4 x 10–9 M
(B) 5 x 10–10 M
(C) 1 x 10–11 M
(D) 5 x 10–11 M
