The graph is a scatter plot with 8 points, each representing the low temperature and high temperature of 8 days in September in a certain city. Both the low temperatures and high temperatures are measured in degrees Fahrenheit. The line of best fit for the data is also shown.

Based on the line of best fit for the data shown, how many degrees does the high temperature increase when the low temperature increases by one degree?
A) 0.9
B) 1.3
C) 1.6
D) 1.8

High Temperature 90 80 70 60 50 50 2 1 3 H 60 70 Low Temperature 80 90