In order to choose the directions of the arrows correctly, we start with Bob. This is because he has no money. Bob will receive gifts from his friends Ana and Sue. Thus, Ana has already spent all her money, so she will receive gifts from her friends Jill and Tom. For these friends, there is no choice.Now we seem to have many options. But there is a critical choice: Friends Ted and Kim can only buy 1 gift. For this pair, we need to decide who will buy the gift for the other.