What is the minimum number of different colours required to paint the figure given above such that no two adjacent regions have the same colour ?
A. 3 B. 4
C. 5 D. 6
38. Consider the following figure and answer the item that follows:
A square is divided into four rectangles as shown above. The lengths of the sides of rectangles are natural numbers. The areas of two rectangles are indicated in the figure. What is the length of each side of the square ?