The bar graph shows the distribution of the number of students in each of four extracurricular activities at a high school.
Which of the following statements can be inferred from the information presented in the bar graph?
The total enrollment of the high school is 171 students.
Robotics is the most popular extracurricular activity among these four.
More students participate in sports than in drama.
The number of students in chess has decreased since last year.
