$1.$ In the problem shown in Figure P$10\mathrm{.}1,$ the views indicated by the balloons are to be changed to full section views taken along the centerline in the direction indicated by the arrows in the remaining view. For each set of views, select the correct section view from the $24$ proposed views shown at the right. A section view choice may be used more than once. A correct answer may not be available as a choice.