Select correct statement/s among the following
(A) Propanal and propanone are Functional isomer.
(B) Ethoxy ethare and methoxy propane are metamers
(C) But-2-ene and but-1-eve are functional isomers
(D) But-2-ene shows optical isomerism.
(E) n-pentane and 2,2 -Dimethyl propane are chain isomers
