B.
I know it may sound strange, but we just recently started using reverse psychology on our 26 mo son. He HATES being told what to do, like every other child in our house, and so when he starts the screaming and carrying on, we start praising him and sounding excited, like he's doing something good. "Oh, wow! That is some GOOD screaming! You are the best screamer in the whole house! ..." Believe me, he knows he's not doing something good. His tantrums have all but immediately stopped as soon as we start doing this. We only started doing it as recently as last week. Reverse psychology has worked great with our 5 and 6 yo's too and still works pretty well with them.
I know, it feels like you're rewarding them. It's actually annoying to them. It's also lightened up the mood quite a lot- we are ending in laughing more often too, which is definitely better for our family.