Only conclusion I follows
Only conclusion II follows
Either I or II follows
Neither I nor II follows E. Both I and II follow
Answer is Wrong!
Answer is Right!
The correct answer is $\boxed{\text{E}}$.
Statement 1: Some pastries are toffees.
Statement 2: All toffees are chocolates.
Conclusion 1: Some chocolates are toffees.
This conclusion follows from Statement 1 and Statement 2. If some pastries are toffees, and all toffees are chocolates, then some pastries must be chocolates.
Conclusion 2: Some toffees are not pastries.
This conclusion also follows from Statement 1 and Statement 2. If some pastries are toffees, and all toffees are chocolates, then not all toffees can be pastries.
Therefore, both conclusions I and II follow.