Boy or Girl?

L had a ultrasound yesterday, and the doctor said that you probably won't be able to tell the gender at 4 months. So I decided not to attend the ultrasound since I would have had to take a half-day off and I was really busy at work. However, the technician was able to determine with 99% accruracy the gender. So since I wasn't there, the technician said that she would put the photo in an envelope (with a label of boy or girl) so that we could find out at the same time. L called me from the parking lot of the doctor's office and told me what happened. However, I told her just to open up the envelope, since I wanted to know right away and I was still at work. L said it's a boy!