You would need to introduce a list.
For example you could have: My shopping list contains of; milk, bread, and yogurt.
Another purpose is to separate clauses.
Most likely A.
In this case a simple statement could be any of those, to shorten to the simple statement you would generalize :)
I think its b more complicated
Answer:
I think the answer would be C. That cake was for me, not him.
(If i'm wrong im so so sorry)
Explanation: