How many ounces are in a full 1/2 barrel of beer?

A full half-barrel of beer contains 15.5 gallons. To convert this volume into ounces, it's important to know that there are 128 ounces in a gallon. Therefore, multiplying 15.5 gallons by 128 ounces per gallon yields:

15.5 gallons × 128 ounces/gallon = 1984 ounces.

This calculation shows that option B is indeed the correct answer, as it accurately reflects the total volume of a standard half-barrel keg in ounces.