The graph gives the estimated population y, in thousands, of a town x years since 2007, where 0≤x≤5. Which of the following best describes the increase in the estimated population from x=0 to x=1?
The estimated population at x=1 is 3.5 times the estimated population at x=0.
A
The estimated population at x=1 is 2.5 times the estimated population at x=0.
B
The estimated population at x=1 is 1.5 times the estimated population at x=0.
C
The estimated population at x=1 is 0.5 times the estimated population at x=0.