Hello! I'm Linda. I have a good e-friend. Her name is Zhang Yun. Her English name is Betty. She is a Chinese girl, but she lives in the UK with her parents. Her father is a doctor and her mother is a teacher. She is ten years old. She call me big sister. She is good at English. She likes Chinese and I also like Chinese. She likes singing and playing basketball. This is my good e-friend. Do you want to know more?

$\frac{1}{1\times 2}$ =1﹣ $\frac{1}{2}$ ，

$\frac{1}{2\times 3}$ = $\frac{1}{2}$ ﹣ $\frac{1}{3}$ ，

$\frac{1}{3\times 4}$ = $\frac{1}{3}$ ﹣ $\frac{1}{4}$ ，

$\frac{1}{4\times 5}$ = $\frac{1}{4}$ ﹣ $\frac{1}{5}$ ，

…

$\frac{1}{n\times \left(n+1\right)}$ = $\frac{1}{n}$ ﹣ $\frac{1}{n+1}$

请完成下面的问题：

有的河蚌会生产珍珠，以下相关描述中，正确的是（    ）