$CH_3-C = CH \quad \underrightarrow {40\%H_2SO_4} \quad A \quad \underrightarrow {Isomersation} CH_3-C -CH_3$ Structure of A anf type of isomerisum in the above reaction are respectively

Question

$\begin{array}{1 1} Prop-1-en-ol,metamerism \\ Prop-1-en-1-ol,tautomerisum \\ Prop-2-en-2-ol,geometrical\;isomerisum \\ Prop-1-en-2-ol,tertomerisum \end{array} $