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Lin and Kai are friends that work together on a team of $n$ total people. Their manager is going to randomly select $2$ people from the team of $n$ to attend a conference. What is the probability that Lin and Kai are the $2$ people chosen? Choose $1$ answer:$\newline$(Choice A) $\frac{1}{\binom{n}{2}}$$\newline$(Choice B) $\binom{n}{2}$$\newline$(Choice C) $\frac{2}{n}$$\newline$(Choice D) $\frac{2}{n(n-1)}$