Question 62
Marina wants to colour each cell of a $5 \times 5$ table red or blue, so that every cell shares at most one side with a cell of the same colour. How many colourings of the table are possible?
(A) 30
(B) 45
(C) 46
(D) 50
(E) 90
(A) 30
(B) 45
(C) 46
(D) 50
(E) 90