The bar graph shows the percentage of college freshmen in a certain country with an average grade of A in high school.

The data displayed by the bar graph can be described by the mathematical model $p=\frac{4x}{5}+26,$ where $x$ is the number of years after $1980$ and $p$ is the percentage of college freshmen who had an average grade of $A$ in high school.

a$.$ According to the formula, in $2010,$ what percentage of college freshmen had an average grade of A in high school? Does this underestimate or overestimate the percent displayed by the bar graph? By how much?

Select the correct choice below and fill in the corresponding answer box to complete your choice.

A$.$ The model overestimates the actual value by $\%.$

B$.$ The model underestimates the actual value by $\%.$