Consider the following reaction (assume an ideal gas mixture). 2NOBr(g) ? 2NO(g) + Br2(g) A 3.0-L vessel was initially filled with pure NOBr, at a pressure of 3.6 atm, at 300 K. After equilibrium was reached, the volume was increased to 5.0 L, while the temperature was kept at 300 K. This will result in: A) an increase in Kp. B) a decrease in Kp. C) a shift in the equilibrium position to the right. D) a shift in the equilibrium position to the left. E) none of these