Question

Which one of the following is an isomer of compound 1?

• A. 2
• B. 4
• C. 2 and 3
• D. all are isomers

Answer 1

The correct option is D all are isomers

All the compounds have formula $C_3{H}_{6}O$ which is same as compound $1$. Hence all of them are its isomers.