Hypothesis Testing. Not sure which number to start with.

I'm going through my book prepping for my final in a couple weeks, and I found one question that I'm not sure how to start the hypothesis testing.

We are testing 12oz cans of soda. 50 cans were tested with a mean of 11.83oz. The question is in reference to if the soda manufacturer is being honest when it claims 12oz on the can.

So the null hypothesis and alternate hypothesis would use the 11.83oz mean? Or the 12oz number since that is what we are testing for?

So would it be:

H0 = 12 or H0 = 11.83 ?

Thanks!