Method to know when first loading a scene?

Is there a method to know when a scene has been loaded for the first time?

I’d like to know when the Menu scene has been loaded for the first time so that I can use the game defaults for the options. After the user has selected options, I’d like to use the user’s options as defaults.

Is there any easy way to do this?

PlayerPrefs lets you specify default values for preferences that don’t exist yet. If they do exist, then the saved values are used instead.

–Eric