14. (12 points) Arrange the natural numbers from 1 to 5 in a row from left to right, such that starting from the third number, each number is the sum or difference of the previous two numbers. How many ways are there to arrange them?
A. 2
B. 4
C. 6
D. 8
【Answer】Solution: 5 can only be in the first or last position, $52314, 54132, 41325, 23145$, so the answer is: $B$.