Emmitt conducted an experiment to determine the association between his brother's age and how many baby teeth he lost each year. The line of best fit for his data has a slope of 2 with age, in years, as the independent variable, x, and number of teeth lost as the dependent variable, y. What does a slope of 2 mean in this context?

Responses
A Emmitt's brother lost 2 teeth every single year.Emmitt's brother lost 2 teeth every single year.
B Emmitt's brother lost 2 additional teeth every year.Emmitt's brother lost 2 additional teeth every year.
C Emmitt's brother aged 2 years for every tooth he lost.Emmitt's brother aged 2 years for every tooth he lost.
D Emmitt's brother was 2 years old when he lost his first tooth.Emmitt's brother was 2 years old when he lost his first tooth.

B Emmitt's brother lost 2 additional teeth every year.