Correct Answer - B
Carboxylic acids never exhibit position isomersm because `-COOH` function always located at `C-1` of the chain.
(1) 1,3-dioxacyclohexane and 1,4-dioxacyclohexane
(2) Butan-1-ol and butan-2-ol
(4) 1-Methoxy-2-methylpropane and 2-methoxy-2-meth-ylpropane
To avoid any possible cunfusion, it is always adivised to write down the complete strutural formula.
