Nitrosyl Bromide Decomposes According to the Following Equation

Nitrosyl bromide decomposes according to the following equation.
A sample of NOBr (0.64 mol) was placed in a 1.00- L flask containing no NO or Br₂. At equilibrium the flask contained 0.46 mol of NOBr. How many moles of NO and Br₂, respectively, are in the flask at equilibrium?

A) 0.46, 0.23
B) 0.46, 0.46
C) 0.18, 0.360
D) 0.18, 0.18
E) 0.18, 0.090