Advice request for installing TV in 2018 Keystone RV Hideout 28BHS

[JoeyJoJo]

Hi, this weekend I am going to give it a go and install a 22" TV in our 2018 Keystone RV Hideout 28BHS. This is what we bought:

Mount-It! LCD TV Wall Mount Bracket (https://www.amazon.com/gp/product/B01DAMSTNO/)

Hitachi 22E30 22" TV (https://www.amazon.com/gp/product/B076M7K1WB/)

The mount weighs 4.95 lbs. and the TV weighs 5.4 lbs., we opted for this TV because the camper is stationary during the camping season and we will be taking it home with us during the winter months.

We plan on installing this in our bedroom close to where the TV hookup connections are located. Our camper either didn't come with a "mount your TV here" sticker or it was taken off prior to delivery. I plan on mounting it to a stud on the inside wall, on the opposite side of the wall is a floor to ceiling pantry/cabinet in the main living area of the camper.

My main question is this, is this stud on the interior wall going to be wood or aluminum?

Any other pointers/advice will be appreciated as this is the first time I'll be trying to do such a thing :-).

Thank you in advance!