The region of convergence of the sequence \(x[n]=\left(\frac{-1}{3}\right)^nu[n]-\left(\frac{1}{2}\right)^nu[-n-1]\) is

1
\(\dfrac{1}{3}<|z|<\dfrac{1}{2}\)
2
\(|z|>\dfrac{1}{3}\)
3
\(|z|<\dfrac{1}{2}\)
4
\(\dfrac{1}{2}<|z|<\dfrac{1}{3}\)

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