• 1. (2023九上·玉山期末) 如图，圆O是Rt△ABC的外接圆，∠ACB=90°，∠A=25°，过点C作圆O的切线，交AB的延长线于点D，则∠D的度数是（　　）                              

  

  A . 25° B . 40° C . 50° D . 65°