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# The correct statement(s) concerning the structures $E, F$ and $G$ is (are) (i) E,F and G are resonance structures (ii) E,F and E,G are tautomers (iii) F and G are geometrical isomers. (iv) F and G are diastereomers.

$(a)\;(i) ,(ii)and (iii) \\ (b)\;(ii),(iii) and (iv) \\ (c)\;(i),(ii) and (iv) \\ (d)\;(i),(iii) and (iv)$

$E-F$ and $E-G$ are tautomers to each other F and G are geometrical isomers as their methyl group can be cis and trans position each other.
Also all geometrical isomers are diastereomers to each other.
Hence b is the correct answer.