Solve the problem.The diagram shows the roads connecting four cities.WX
YZThe matrix A below represents the number of routes between each pair of cities without passing through another city. 
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Calculate A3. What information is given by the entry in row 2, column 3 of A3?
A. There are 5 ways to travel between cities X and Y by passing through exactly three cities
B. There are 4 ways to travel between cities X and Y by passing through one city
C. There are 5 ways to travel between cities X and Y by passing through exactly two cities
D. There are 4 ways to travel between cities X and Y by passing through at most two cities
Answer: C
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