A grouped bar chart displays the number of students enrolled in three different courses (Math, Science, History) across two academic years (Year A, Year B). The enrollment figures are:

• Math: Year A: $120$ students, Year B: $150$ students
• Science: Year A: $100$ students, Year B: $130$ students
• History: Year A: $80$ students, Year B: $70$ students

Which of the following statements are true?