Reality check pop quiz: Mum n dad went to milk store and saw...

Reality check pop quiz:
Mum n dad went to milk store and saw a2m, bal, bub, wha and golden koala tins. They asked the shopkeeper: whats the difference between those 5 formulas?
The the shopkeeper said:

A2 is currently best selling, its a2 protein is easy to digest for those with a1 digestion problem.

Bal is organic and reputable brand, its also pricey like its sp.

Bub is natural goat milk, easy to digest for those who can't drink cow milk.

Golden koala: this one is for direct export to china, not many uses it here, can't find these in colesworth except at my shop.

Wha: ? Any takers?