Hydrogenation of alkenes How many structural isomeric alkenes ($\ce{C_6H_{10}}$) can be hydrogenated to give methylcyclopentane? Would there be three? I drew out what I thought was correct but I just want to confirm that there are three.
There are 4 structural isomeric alkenes ($\ce{C_6H_{10}}$) that can be hydrogenated to give methylcyclopentane.

1-Methycyclopentene



3-Methylcyclopentene



4-Methylcyclopentene



Methylenecyclopentane