Your classmate says there are two isomers for ethanol. Are they right or not, and if so, why or why not?

a. The classmate is correct, because you can put the OH group on either carbon.

b. The classmate is correct, because you can put the COOH group on either carbon.

c. The classmate is not correct, there is only one isomer of ethanol.

d. The classmate is not correct, because there are more than two isomers of ethanol.