Best option = none.
If you don't drink and it's not important to you....maybe just abstain.
If it is something you enjoy and don't want to give up....here's some advice from google:
The best form of alcohol, from a calorie perspective, are the classic spirits. We’re talking about tequila, rum, vodka, whiskey, and gin. One ounce of any of those classic spirits contains around 64 calories, most of which come from the alcohol content.
So, maybe a small margarita, or any of these spirits mixed with low calorie diet juices?
Good luck.