在平面上，过点P作直线l的垂线所得的垂足称为点P在直线l上的投影，由区域 $\{\begin{array}{l}x-2\le 0\\ x+y\ge 0\\ x-3y+4\ge 0\end{array}$ 中的点在直线x+y﹣2=0上的投影构成的线段记为AB，则|AB|=（　　）

阅读短文，下列问题

（C）

    I like sports. I have ten tennis balls, seven basketballs, four volleyballs and five soccer balls. I play tennis with my friends every day.

    I have five baseballs, five volleyballs, two soccer balls. I like ping-pong. It's easy for me. I often play ping-pong with my classmates. I also(也) have three ping-pong bats and some ping-pong balls.

    I don't have any(任何的) balls. I love sports, but I don't play them. I only watch them on TV.