单项选择题

My inspiration is my grandmother, who’s still alive at 96. She raised me from the time I was 8 on a dairy farm in Wisconsin. In another era she could have done what I do, although I didn’t know what a CEO was then. I’m a real go-getter and don’t know any other way. I tell my 12-year-old daughter, if you have a test, why not try for an A I don’t believe in half doing something.
In my career, the biggest shock came in my 20’s. I loved my job as a field systems analyst at 3M, and wanted my first manager’s job at headquarters. They even told me I was the best candidate, totally qualified. Then they told me, "It’s not possible because you’re a woman." I was so shocked that I quit. I had this feeling of being totally blown away as I crawled back to Atlanta.
I preach to people: there are no bad bosses. You learn how not to treat people. My worst boss was full of himself and wanted to micromanage. The man didn’t have a complimentary bone in his body. I still have my performance review he wrote in small anal print. It was winter in Minnesota. I didn’t want to drive. I was out the door at 5 p.m. because the bus left the front door at 5: 06. He put that down in my review how fast I was out the door. It didn’t matter the rest of the year I was there until 6 or 7.
Later, when I switched companies. I attended an off-site strategy meeting in Florida. There was a barbecue and the meeting continued on into the evening. My boss’ boss threw a towel across the room and said, "Clean up, Carol." I caught the towel, went over and scrubbed his face. Everybody in the room went "Ohhhh."
The luckiest thing in my career is that I have a computer science degree. Doors opened wide at a time when it wasn’t necessarily great for women. If I could wave a magic wand, I’d have every girl pass college freshman calculus.
What is the biggest shock in the writer’s career