阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
Roy wasn't the only one to receive his call-up（入伍）papers. Stephen Napier's call-up came at the beginning of February and he was pleased to find that he would be going into the Roy al Air Force (RAF).
His father was not so pleased and made his feelings known as he and Stephen were on their daily walk. It was the first step in his plans for Stephen to take over the estate（地产）when the time came, and although Stephen was well aware of this, he could think of no reason not to accompany him.
