Observe the given subtraction. \[\frac{\begin{align} & \,\,\,\,\,5~~(a)~~\,0 \\ & -\text{ (b)}~\,\,7\,\,2 \\ \end{align}}{\,\,\,\,\,2\,\,1\,\,8}\] What are the values of (a) and (b)?

• A. a = 3, b = 9
• B. a = 6, b = 4
• C. a = 9,b = 3
• D. a = 6, b = 6