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Consider a weighted complete graph $G$ on the vertex set $\{v_1,v_2,.....v_n\}$ such that the weight of the edge $(v_i, v_j)$ is $2|i-j|$. The weight of a minimum spanning tree of $G$ is:

- $n-1$
- $2n-2$
- $\begin{pmatrix} n \\ 2 \end{pmatrix}$
- $n^2$

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