The correct answer is $\boxed{\text{A. None follows}}$.
The first statement is “All tigers are lions.” This means that every tiger is also a lion. The second statement is “No cow is lion.” This means that no cow is a lion. The third statement is “Some camels are cows.” This means that there are some camels that are also cows.
From these statements, we can conclude that no camel is a tiger. This is because the second statement tells us that no cow is a lion, and the first statement tells us that all tigers are lions. Therefore, no cow can be a tiger.
However, we cannot conclude anything else about the relationship between tigers and camels. The third statement tells us that there are some camels that are also cows, but it does not tell us anything about whether there are any camels that are also tigers. Therefore, we cannot conclude that some lions are camels, that some tigers are cows, or that either I or II follows.