Select the correct answer.
The director of a museum recorded the number of students and adult chaperones in several school groups visiting the museum. She organized the data in a scatter plot, where x represents the number of students and y represents the number of adult chaperones. Then she used a graphing tool to find the equation of the line of best fit:

y = 0.123x + 5.397.

Based on the line of best fit, approximately how many students are predicted to be in a school group with 20 adult chaperones?