Certain organic reactions proceed through formation of intermediates which are highly strained and reactive. Given the following reaction, the correct statement about the mechanism of the reaction is

Intramolecular $$S_N2$$ attack by $$-\text{COO}^-$$ to form an intermediate followed by the attack by $$\text{HO}^-$$ via $$S_N2$$ pathway on the intermediate

Intramolecular $$S_N2$$ attack by $$-\text{COO}^-$$ to form an intermediate followed by the attack by $$\text{HO}^-$$ via $$S_N1$$ pathway on the intermediate

$$\text{HO}^-$$ attacks via $$S_N1$$ pathway on the reactant

$$\text{HO}^-$$ attacks via $$S_N2$$ pathway on the reactant