Mary said to me, “Had I seen your bag, I______ it to you.”

Mary said to me, “Had I seen your bag, I______ it to you.”
A、will return
B、must return
C、could return
D、would have returned
【正确答案】：D
【题目解析】：玛丽对我说，要是我看见你的包，我肯定帮你提。此题考查的是虚拟语气的倒装用法。