${\mathrm{C}}_4{\mathrm{H}}_8\left(\mathrm{A}\right)\stackrel{HCl}{\to }\mathrm{B}\stackrel{1\text{ mole }{\mathrm{NH}}_3}{\to }\mathrm{C}\underset{\text{ 2) }\mathrm{O}-5^{\circ }\mathrm{C}}{\overset{1) {\mathrm{NaNO}}_2/\mathrm{HCl}}{\to }}\mathrm{D}$
If ‘A’ on reductive ozonlysis produced 2 moles of ethanal, then correct statement is

Option (A)  :  A is 2-Butene

Option (B)  :  A is Exhibits configuration isomerism

Option (C) : C  Exhibits optical isomerism

Option (D) :  C gives carbyal amine test

If ‘A’ on reductive ozonlysis produced 2 moles of ethanal