KSET Exam 2015 Solved Paper

Two statements (I) and (II) given below are followed by two conclusions (a) and (b). You have to consider the statements are true. Which of the given conclusions logically follows from the given statements?
Statements:
I) Some pastries are toffees.
II) All toffees are chocolates.
Conclusions:
a) Some chocolates are toffees.
b) Some toffees are not pastries