Build a binary search tree for the following list of countries, sorting them by population. Add countries to this tree in the order in which they are listed. Country Population Philippines 108 Vietnam 96 Bangladesh 163 65 France Mexico 128 Germany 84 Tanzania 58 Nigeria 201 Russia 146 Italy 61 (a) What is the parent node of Tanzania? Philippines Vietnam Bangladesh France O Mexico Germany Tanzania Nigeria Russia O Italy (b) How many children does the Mexico node have? (c) How many comparisons are needed to locate Nigeria in this tree, starting from the top?

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