初中英语阅读理解I was cleaning out an old box when an old card caugh

初中英语阅读理解
I was cleaning out an old box when an old card caught my eye.Queen City Casket Company.“What is it?” I wondered I turned it over.There,in faded ink,was a hand – scrawled (手写的) message.Immediately my mind traveled back many years ago.
I was nine years old,walking down the cold,wet street of Springfield,with a bag of magazines on my shoulder.On my rounds that day,I came to that company finally,whose owner,Mr.Rader,had always taken me there to ask his workers whether they wanted any magazines.
Shaking off the rain like a wet dog,I entered Mr.Rader’s office.After a quick glance he led me over to the fireplace.Noticing the hole in the top of my shoe,he said,“Come with me!” pulling me into his car .We pulled to a stop before a shoe store.Inside,a salesman fitted me with the finest pair of Oxfords I had ever seen.I felt about 10 feet tall when I got up in them.“We’ d like a pair of new socks too,” Mr.Rader said.
Back in his office,Mr.Rader took out a card,wrote something on it,and handed it to me.With tearful eyes,I read,“Do to others as you would have them do to you.” He said affectionately,“Jimmy,I want you to know I love you”.I said goodbye,and for the first time I sensed a flam of hope that somehow things would be all right.With people like Mr.Rader in the world,there was hope,kindness and love,and that would always make a difference.
WHy did Mr.Rader help the writer?
有两个选项
A.because he wanted to show kindness to the writer
B.because the writer need his help
选哪一个?
Mr.Rader helped the writer mainly because--------