Someone help please:) R= 35.7 + 1.37t
The equation above relates the urbanization rated, as a percent, in a particular country to the number of years t since 2000. Which of the following statements best describes the relationship between the year since 2000 and the urbanization rate?

A. It is linear because the urbanization rate increases by 35.7 each year

B. It is linear because the urbanization rate increases by 1.37 each year

C. It is exponential because the urbanization rate increases by 37% each year

D. It is exponential because the urbanization rate increases by a factor of 35.7 each year