Which of the following satements are wrong?

Options

A. Isobutane and `n`- butane are chain isomers.
B. Ethyl cyanide and ethyl isocyanide are functional isomers.
C. `H-C-=N` and `H-overset(o+)N-=overset(Θ)C` are tautomers.
D. Maleic and fumaric acids are enantiomers.

Answer

D

Explanation

(a), (b), and (c ) are true.
(d) They are geometrical isomers.