. Consider the tree drawn below. a. Suppose we designate vertex e as the root. List the children, parents and siblings of each vertex. Does any vertex other than e have grandchildren? b. Suppose e is not chosen as the root. Does our choice of root vertex change the number of children e has? The number of grandchildren? How many are there of each? c. In fact, pick any vertex in the tree and suppose it is not the root. Explain why the number of children of that vertex does not depend on which other vertex is the root.

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